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Finding the Fourth Proportional to 530,767.80, 732,411.36 and 315,873.18

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Solution

The fourth proportional to 530,767.80, 732,411.36 and 315,873.18 is: 435,876.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,767.80 : 732,411.36 = 315,873.18 : x
  2. Step 2: Convert to fraction form
    530,767.80/732,411.36 = 315,873.18/x
  3. Step 3: Cross multiply
    530,767.80x = 732,411.36 × 315,873.18
  4. Step 4: Simplify right side
    530,767.80x = 231,349,105,351.33
  5. Step 5: Solve for x
    x = 231,349,105,351.33/530,767.80
  6. Step 6: Final answer
    x = 435,876.30

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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.