Home / 687,005.76-1,030,805.28-371,684.64

Finding the Fourth Proportional to 687,005.76, 1,030,805.28 and 371,684.64

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Solution

The fourth proportional to 687,005.76, 1,030,805.28 and 371,684.64 is: 557,687.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,005.76 : 1,030,805.28 = 371,684.64 : x
  2. Step 2: Convert to fraction form
    687,005.76/1,030,805.28 = 371,684.64/x
  3. Step 3: Cross multiply
    687,005.76x = 1,030,805.28 × 371,684.64
  4. Step 4: Simplify right side
    687,005.76x = 383,134,489,406.90
  5. Step 5: Solve for x
    x = 383,134,489,406.90/687,005.76
  6. Step 6: Final answer
    x = 557,687.45

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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.