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Finding the Fourth Proportional to 643,041.72, 886,885.56 and 413,625.24

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Solution

The fourth proportional to 643,041.72, 886,885.56 and 413,625.24 is: 570,473.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,041.72 : 886,885.56 = 413,625.24 : x
  2. Step 2: Convert to fraction form
    643,041.72/886,885.56 = 413,625.24/x
  3. Step 3: Cross multiply
    643,041.72x = 886,885.56 × 413,625.24
  4. Step 4: Simplify right side
    643,041.72x = 366,838,252,607.53
  5. Step 5: Solve for x
    x = 366,838,252,607.53/643,041.72
  6. Step 6: Final answer
    x = 570,473.49

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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.