Home / 900,174.83-1,242,358.76-518,217.71

Finding the Fourth Proportional to 900,174.83, 1,242,358.76 and 518,217.71

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Solution

The fourth proportional to 900,174.83, 1,242,358.76 and 518,217.71 is: 715,208.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,174.83 : 1,242,358.76 = 518,217.71 : x
  2. Step 2: Convert to fraction form
    900,174.83/1,242,358.76 = 518,217.71/x
  3. Step 3: Cross multiply
    900,174.83x = 1,242,358.76 × 518,217.71
  4. Step 4: Simplify right side
    900,174.83x = 643,812,306,689.39
  5. Step 5: Solve for x
    x = 643,812,306,689.39/900,174.83
  6. Step 6: Final answer
    x = 715,208.08

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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.