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Finding the Fourth Proportional to 502,483.80, 753,725.70 and 289,907.40

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Solution

The fourth proportional to 502,483.80, 753,725.70 and 289,907.40 is: 434,861.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,483.80 : 753,725.70 = 289,907.40 : x
  2. Step 2: Convert to fraction form
    502,483.80/753,725.70 = 289,907.40/x
  3. Step 3: Cross multiply
    502,483.80x = 753,725.70 × 289,907.40
  4. Step 4: Simplify right side
    502,483.80x = 218,510,658,000.18
  5. Step 5: Solve for x
    x = 218,510,658,000.18/502,483.80
  6. Step 6: Final answer
    x = 434,861.10

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Similar ratio
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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.