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Finding the Fourth Proportional to 506,488.04, 698,906.58 and 280,128.68

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Solution

The fourth proportional to 506,488.04, 698,906.58 and 280,128.68 is: 386,551.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,488.04 : 698,906.58 = 280,128.68 : x
  2. Step 2: Convert to fraction form
    506,488.04/698,906.58 = 280,128.68/x
  3. Step 3: Cross multiply
    506,488.04x = 698,906.58 × 280,128.68
  4. Step 4: Simplify right side
    506,488.04x = 195,783,777,698.71
  5. Step 5: Solve for x
    x = 195,783,777,698.71/506,488.04
  6. Step 6: Final answer
    x = 386,551.63

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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.