Home / 643,187.18-887,480.96-371,155.83

Finding the Fourth Proportional to 643,187.18, 887,480.96 and 371,155.83

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Solution

The fourth proportional to 643,187.18, 887,480.96 and 371,155.83 is: 512,127.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,187.18 : 887,480.96 = 371,155.83 : x
  2. Step 2: Convert to fraction form
    643,187.18/887,480.96 = 371,155.83/x
  3. Step 3: Cross multiply
    643,187.18x = 887,480.96 × 371,155.83
  4. Step 4: Simplify right side
    643,187.18x = 329,393,730,462.22
  5. Step 5: Solve for x
    x = 329,393,730,462.22/643,187.18
  6. Step 6: Final answer
    x = 512,127.33

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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.