Home / 955,107.20-1,318,020.72-519,510.80

Finding the Fourth Proportional to 955,107.20, 1,318,020.72 and 519,510.80

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Solution

The fourth proportional to 955,107.20, 1,318,020.72 and 519,510.80 is: 716,910.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    955,107.20 : 1,318,020.72 = 519,510.80 : x
  2. Step 2: Convert to fraction form
    955,107.20/1,318,020.72 = 519,510.80/x
  3. Step 3: Cross multiply
    955,107.20x = 1,318,020.72 × 519,510.80
  4. Step 4: Simplify right side
    955,107.20x = 684,725,998,663.78
  5. Step 5: Solve for x
    x = 684,725,998,663.78/955,107.20
  6. Step 6: Final answer
    x = 716,910.10

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Double scale
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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.