Home / 643,061.15-887,360.44-371,216.62

Finding the Fourth Proportional to 643,061.15, 887,360.44 and 371,216.62

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Solution

The fourth proportional to 643,061.15, 887,360.44 and 371,216.62 is: 512,242.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,061.15 : 887,360.44 = 371,216.62 : x
  2. Step 2: Convert to fraction form
    643,061.15/887,360.44 = 371,216.62/x
  3. Step 3: Cross multiply
    643,061.15x = 887,360.44 × 371,216.62
  4. Step 4: Simplify right side
    643,061.15x = 329,402,941,040.11
  5. Step 5: Solve for x
    x = 329,402,941,040.11/643,061.15
  6. Step 6: Final answer
    x = 512,242.02

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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.