Home / 763,800.30-1,145,700.45-432,024.30

Finding the Fourth Proportional to 763,800.30, 1,145,700.45 and 432,024.30

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Solution

The fourth proportional to 763,800.30, 1,145,700.45 and 432,024.30 is: 648,036.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,800.30 : 1,145,700.45 = 432,024.30 : x
  2. Step 2: Convert to fraction form
    763,800.30/1,145,700.45 = 432,024.30/x
  3. Step 3: Cross multiply
    763,800.30x = 1,145,700.45 × 432,024.30
  4. Step 4: Simplify right side
    763,800.30x = 494,970,434,920.94
  5. Step 5: Solve for x
    x = 494,970,434,920.94/763,800.30
  6. Step 6: Final answer
    x = 648,036.45

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Double scale
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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.