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Finding the Fourth Proportional to 472,500.45, 646,833.96 and 469,123.56

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Solution

The fourth proportional to 472,500.45, 646,833.96 and 469,123.56 is: 642,211.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,500.45 : 646,833.96 = 469,123.56 : x
  2. Step 2: Convert to fraction form
    472,500.45/646,833.96 = 469,123.56/x
  3. Step 3: Cross multiply
    472,500.45x = 646,833.96 × 469,123.56
  4. Step 4: Simplify right side
    472,500.45x = 303,445,050,044.10
  5. Step 5: Solve for x
    x = 303,445,050,044.10/472,500.45
  6. Step 6: Final answer
    x = 642,211.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.