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Finding the Fourth Proportional to 502,482.30, 753,723.45 and 289,905.90

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Solution

The fourth proportional to 502,482.30, 753,723.45 and 289,905.90 is: 434,858.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,482.30 : 753,723.45 = 289,905.90 : x
  2. Step 2: Convert to fraction form
    502,482.30/753,723.45 = 289,905.90/x
  3. Step 3: Cross multiply
    502,482.30x = 753,723.45 × 289,905.90
  4. Step 4: Simplify right side
    502,482.30x = 218,508,875,123.36
  5. Step 5: Solve for x
    x = 218,508,875,123.36/502,482.30
  6. Step 6: Final answer
    x = 434,858.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.