Home / 688,288.86-1,032,433.29-215,011.53

Finding the Fourth Proportional to 688,288.86, 1,032,433.29 and 215,011.53

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Solution

The fourth proportional to 688,288.86, 1,032,433.29 and 215,011.53 is: 322,517.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,288.86 : 1,032,433.29 = 215,011.53 : x
  2. Step 2: Convert to fraction form
    688,288.86/1,032,433.29 = 215,011.53/x
  3. Step 3: Cross multiply
    688,288.86x = 1,032,433.29 × 215,011.53
  4. Step 4: Simplify right side
    688,288.86x = 221,985,061,305.83
  5. Step 5: Solve for x
    x = 221,985,061,305.83/688,288.86
  6. Step 6: Final answer
    x = 322,517.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.