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Finding the Fourth Proportional to 530,429.43, 732,008.07 and 288,727.59

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Solution

The fourth proportional to 530,429.43, 732,008.07 and 288,727.59 is: 398,452.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,429.43 : 732,008.07 = 288,727.59 : x
  2. Step 2: Convert to fraction form
    530,429.43/732,008.07 = 288,727.59/x
  3. Step 3: Cross multiply
    530,429.43x = 732,008.07 × 288,727.59
  4. Step 4: Simplify right side
    530,429.43x = 211,350,925,911.65
  5. Step 5: Solve for x
    x = 211,350,925,911.65/530,429.43
  6. Step 6: Final answer
    x = 398,452.49

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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.