Home / 388,856.20-582,117.90-365,787.40

Finding the Fourth Proportional to 388,856.20, 582,117.90 and 365,787.40

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Solution

The fourth proportional to 388,856.20, 582,117.90 and 365,787.40 is: 547,583.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,856.20 : 582,117.90 = 365,787.40 : x
  2. Step 2: Convert to fraction form
    388,856.20/582,117.90 = 365,787.40/x
  3. Step 3: Cross multiply
    388,856.20x = 582,117.90 × 365,787.40
  4. Step 4: Simplify right side
    388,856.20x = 212,931,393,134.46
  5. Step 5: Solve for x
    x = 212,931,393,134.46/388,856.20
  6. Step 6: Final answer
    x = 547,583.90

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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.