Home / 641,988,000.36-886,214,643.66-433,426,640.76

Finding the Fourth Proportional to 641,988,000.36, 886,214,643.66 and 433,426,640.76

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Solution

The fourth proportional to 641,988,000.36, 886,214,643.66 and 433,426,640.76 is: 598,311,862.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,988,000.36 : 886,214,643.66 = 433,426,640.76 : x
  2. Step 2: Convert to fraction form
    641,988,000.36/886,214,643.66 = 433,426,640.76/x
  3. Step 3: Cross multiply
    641,988,000.36x = 886,214,643.66 × 433,426,640.76
  4. Step 4: Simplify right side
    641,988,000.36x = 384,109,035,993,874,240
  5. Step 5: Solve for x
    x = 384,109,035,993,874,240/641,988,000.36
  6. Step 6: Final answer
    x = 598,311,862.18

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Half scale
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Double scale
Find fourth proportional to 641,988,001.36, 886,214,645.04 and 433,426,641.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.