Home / 644,071,572.90-966,107,359.35-439,998,228.90

Finding the Fourth Proportional to 644,071,572.90, 966,107,359.35 and 439,998,228.90

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Solution

The fourth proportional to 644,071,572.90, 966,107,359.35 and 439,998,228.90 is: 659,997,343.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,071,572.90 : 966,107,359.35 = 439,998,228.90 : x
  2. Step 2: Convert to fraction form
    644,071,572.90/966,107,359.35 = 439,998,228.90/x
  3. Step 3: Cross multiply
    644,071,572.90x = 966,107,359.35 × 439,998,228.90
  4. Step 4: Simplify right side
    644,071,572.90x = 425,085,527,041,255,872
  5. Step 5: Solve for x
    x = 425,085,527,041,255,872/644,071,572.90
  6. Step 6: Final answer
    x = 659,997,343.35

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Half scale
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Double scale
Find fourth proportional to 644,071,573.90, 966,107,360.85 and 439,998,229.90
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.