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Finding the Fourth Proportional to 500,658.40, 750,981.12 and 121,582.24

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Solution

The fourth proportional to 500,658.40, 750,981.12 and 121,582.24 is: 182,371.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,658.40 : 750,981.12 = 121,582.24 : x
  2. Step 2: Convert to fraction form
    500,658.40/750,981.12 = 121,582.24/x
  3. Step 3: Cross multiply
    500,658.40x = 750,981.12 × 121,582.24
  4. Step 4: Simplify right side
    500,658.40x = 91,305,966,767.31
  5. Step 5: Solve for x
    x = 91,305,966,767.31/500,658.40
  6. Step 6: Final answer
    x = 182,371.79

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1.5x scale

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.