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Finding the Fourth Proportional to 402,462.70, 603,694.05 and 302,079.40

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Solution

The fourth proportional to 402,462.70, 603,694.05 and 302,079.40 is: 453,119.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,462.70 : 603,694.05 = 302,079.40 : x
  2. Step 2: Convert to fraction form
    402,462.70/603,694.05 = 302,079.40/x
  3. Step 3: Cross multiply
    402,462.70x = 603,694.05 × 302,079.40
  4. Step 4: Simplify right side
    402,462.70x = 182,363,536,407.57
  5. Step 5: Solve for x
    x = 182,363,536,407.57/402,462.70
  6. Step 6: Final answer
    x = 453,119.10

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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.