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Finding the Fourth Proportional to 502,488.80, 753,733.20 and 289,912.40

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Solution

The fourth proportional to 502,488.80, 753,733.20 and 289,912.40 is: 434,868.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,488.80 : 753,733.20 = 289,912.40 : x
  2. Step 2: Convert to fraction form
    502,488.80/753,733.20 = 289,912.40/x
  3. Step 3: Cross multiply
    502,488.80x = 753,733.20 × 289,912.40
  4. Step 4: Simplify right side
    502,488.80x = 218,516,600,971.68
  5. Step 5: Solve for x
    x = 218,516,600,971.68/502,488.80
  6. Step 6: Final answer
    x = 434,868.60

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1.5x scale

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.