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Finding the Fourth Proportional to 709,328.52, 977,729.58 and 479,801.97

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Solution

The fourth proportional to 709,328.52, 977,729.58 and 479,801.97 is: 661,353.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,328.52 : 977,729.58 = 479,801.97 : x
  2. Step 2: Convert to fraction form
    709,328.52/977,729.58 = 479,801.97/x
  3. Step 3: Cross multiply
    709,328.52x = 977,729.58 × 479,801.97
  4. Step 4: Simplify right side
    709,328.52x = 469,116,578,611.27
  5. Step 5: Solve for x
    x = 469,116,578,611.27/709,328.52
  6. Step 6: Final answer
    x = 661,353.05

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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.