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Finding the Fourth Proportional to 431,123.70, 602,392.20 and 431,123.70

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Solution

The fourth proportional to 431,123.70, 602,392.20 and 431,123.70 is: 602,392.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,123.70 : 602,392.20 = 431,123.70 : x
  2. Step 2: Convert to fraction form
    431,123.70/602,392.20 = 431,123.70/x
  3. Step 3: Cross multiply
    431,123.70x = 602,392.20 × 431,123.70
  4. Step 4: Simplify right side
    431,123.70x = 259,705,554,115.14
  5. Step 5: Solve for x
    x = 259,705,554,115.14/431,123.70
  6. Step 6: Final answer
    x = 602,392.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.