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Finding the Fourth Proportional to 527,978.04, 729,211.08 and 357,916.92

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Solution

The fourth proportional to 527,978.04, 729,211.08 and 357,916.92 is: 494,333.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,978.04 : 729,211.08 = 357,916.92 : x
  2. Step 2: Convert to fraction form
    527,978.04/729,211.08 = 357,916.92/x
  3. Step 3: Cross multiply
    527,978.04x = 729,211.08 × 357,916.92
  4. Step 4: Simplify right side
    527,978.04x = 260,996,983,783.47
  5. Step 5: Solve for x
    x = 260,996,983,783.47/527,978.04
  6. Step 6: Final answer
    x = 494,333.03

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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.