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Finding the Fourth Proportional to 506,487.04, 698,905.20 and 280,127.68

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Solution

The fourth proportional to 506,487.04, 698,905.20 and 280,127.68 is: 386,550.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,487.04 : 698,905.20 = 280,127.68 : x
  2. Step 2: Convert to fraction form
    506,487.04/698,905.20 = 280,127.68/x
  3. Step 3: Cross multiply
    506,487.04x = 698,905.20 × 280,127.68
  4. Step 4: Simplify right side
    506,487.04x = 195,782,692,215.94
  5. Step 5: Solve for x
    x = 195,782,692,215.94/506,487.04
  6. Step 6: Final answer
    x = 386,550.25

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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.