Home / 840,685.30-1,160,171.24-478,161.29

Finding the Fourth Proportional to 840,685.30, 1,160,171.24 and 478,161.29

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Solution

The fourth proportional to 840,685.30, 1,160,171.24 and 478,161.29 is: 659,877.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,685.30 : 1,160,171.24 = 478,161.29 : x
  2. Step 2: Convert to fraction form
    840,685.30/1,160,171.24 = 478,161.29/x
  3. Step 3: Cross multiply
    840,685.30x = 1,160,171.24 × 478,161.29
  4. Step 4: Simplify right side
    840,685.30x = 554,748,977,248.92
  5. Step 5: Solve for x
    x = 554,748,977,248.92/840,685.30
  6. Step 6: Final answer
    x = 659,877.10

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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.