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Finding the Fourth Proportional to 632,436.35, 872,622.31 and 387,472.86

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Solution

The fourth proportional to 632,436.35, 872,622.31 and 387,472.86 is: 534,626.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,436.35 : 872,622.31 = 387,472.86 : x
  2. Step 2: Convert to fraction form
    632,436.35/872,622.31 = 387,472.86/x
  3. Step 3: Cross multiply
    632,436.35x = 872,622.31 × 387,472.86
  4. Step 4: Simplify right side
    632,436.35x = 338,117,462,155.51
  5. Step 5: Solve for x
    x = 338,117,462,155.51/632,436.35
  6. Step 6: Final answer
    x = 534,626.86

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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.