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Finding the Fourth Proportional to 642,006.60, 963,009.90 and 483,376.20

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Solution

The fourth proportional to 642,006.60, 963,009.90 and 483,376.20 is: 725,064.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,006.60 : 963,009.90 = 483,376.20 : x
  2. Step 2: Convert to fraction form
    642,006.60/963,009.90 = 483,376.20/x
  3. Step 3: Cross multiply
    642,006.60x = 963,009.90 × 483,376.20
  4. Step 4: Simplify right side
    642,006.60x = 465,496,066,024.38
  5. Step 5: Solve for x
    x = 465,496,066,024.38/642,006.60
  6. Step 6: Final answer
    x = 725,064.30

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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.