Home / 687,925.30-949,339.90-382,000.74

Finding the Fourth Proportional to 687,925.30, 949,339.90 and 382,000.74

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Solution

The fourth proportional to 687,925.30, 949,339.90 and 382,000.74 is: 527,162.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,925.30 : 949,339.90 = 382,000.74 : x
  2. Step 2: Convert to fraction form
    687,925.30/949,339.90 = 382,000.74/x
  3. Step 3: Cross multiply
    687,925.30x = 949,339.90 × 382,000.74
  4. Step 4: Simplify right side
    687,925.30x = 362,648,544,311.53
  5. Step 5: Solve for x
    x = 362,648,544,311.53/687,925.30
  6. Step 6: Final answer
    x = 527,162.68

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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.