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Finding the Fourth Proportional to 674,560.50, 930,929.52 and 388,124.25

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Solution

The fourth proportional to 674,560.50, 930,929.52 and 388,124.25 is: 535,632.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,560.50 : 930,929.52 = 388,124.25 : x
  2. Step 2: Convert to fraction form
    674,560.50/930,929.52 = 388,124.25/x
  3. Step 3: Cross multiply
    674,560.50x = 930,929.52 × 388,124.25
  4. Step 4: Simplify right side
    674,560.50x = 361,316,321,752.86
  5. Step 5: Solve for x
    x = 361,316,321,752.86/674,560.50
  6. Step 6: Final answer
    x = 535,632.20

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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.