Home / 670,619,588.70-1,005,929,383.05-638,874,846.30

Finding the Fourth Proportional to 670,619,588.70, 1,005,929,383.05 and 638,874,846.30

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Solution

The fourth proportional to 670,619,588.70, 1,005,929,383.05 and 638,874,846.30 is: 958,312,269.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,619,588.70 : 1,005,929,383.05 = 638,874,846.30 : x
  2. Step 2: Convert to fraction form
    670,619,588.70/1,005,929,383.05 = 638,874,846.30/x
  3. Step 3: Cross multiply
    670,619,588.70x = 1,005,929,383.05 × 638,874,846.30
  4. Step 4: Simplify right side
    670,619,588.70x = 642,662,979,984,722,560
  5. Step 5: Solve for x
    x = 642,662,979,984,722,560/670,619,588.70
  6. Step 6: Final answer
    x = 958,312,269.45

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Double scale
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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.