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Finding the Fourth Proportional to 530,497.74, 732,086.96 and 288,782.15

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Solution

The fourth proportional to 530,497.74, 732,086.96 and 288,782.15 is: 398,519.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,497.74 : 732,086.96 = 288,782.15 : x
  2. Step 2: Convert to fraction form
    530,497.74/732,086.96 = 288,782.15/x
  3. Step 3: Cross multiply
    530,497.74x = 732,086.96 × 288,782.15
  4. Step 4: Simplify right side
    530,497.74x = 211,413,641,191.42
  5. Step 5: Solve for x
    x = 211,413,641,191.42/530,497.74
  6. Step 6: Final answer
    x = 398,519.40

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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.