Home / 698,153.20-1,047,229.80-521,006.20

Finding the Fourth Proportional to 698,153.20, 1,047,229.80 and 521,006.20

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Solution

The fourth proportional to 698,153.20, 1,047,229.80 and 521,006.20 is: 781,509.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,153.20 : 1,047,229.80 = 521,006.20 : x
  2. Step 2: Convert to fraction form
    698,153.20/1,047,229.80 = 521,006.20/x
  3. Step 3: Cross multiply
    698,153.20x = 1,047,229.80 × 521,006.20
  4. Step 4: Simplify right side
    698,153.20x = 545,613,218,624.76
  5. Step 5: Solve for x
    x = 545,613,218,624.76/698,153.20
  6. Step 6: Final answer
    x = 781,509.30

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Double scale
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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.