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Finding the Fourth Proportional to 530,121.06, 732,008.52 and 491,656.59

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Solution

The fourth proportional to 530,121.06, 732,008.52 and 491,656.59 is: 678,895.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,121.06 : 732,008.52 = 491,656.59 : x
  2. Step 2: Convert to fraction form
    530,121.06/732,008.52 = 491,656.59/x
  3. Step 3: Cross multiply
    530,121.06x = 732,008.52 × 491,656.59
  4. Step 4: Simplify right side
    530,121.06x = 359,896,812,794.15
  5. Step 5: Solve for x
    x = 359,896,812,794.15/530,121.06
  6. Step 6: Final answer
    x = 678,895.52

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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.