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Finding the Fourth Proportional to 632,424.20, 872,751.72 and 345,938

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Solution

The fourth proportional to 632,424.20, 872,751.72 and 345,938 is: 477,397.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,424.20 : 872,751.72 = 345,938 : x
  2. Step 2: Convert to fraction form
    632,424.20/872,751.72 = 345,938/x
  3. Step 3: Cross multiply
    632,424.20x = 872,751.72 × 345,938
  4. Step 4: Simplify right side
    632,424.20x = 301,917,984,513.36
  5. Step 5: Solve for x
    x = 301,917,984,513.36/632,424.20
  6. Step 6: Final answer
    x = 477,397.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.