Home / 655,980.32-984,281.52-390,265.76

Finding the Fourth Proportional to 655,980.32, 984,281.52 and 390,265.76

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Solution

The fourth proportional to 655,980.32, 984,281.52 and 390,265.76 is: 585,583.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,980.32 : 984,281.52 = 390,265.76 : x
  2. Step 2: Convert to fraction form
    655,980.32/984,281.52 = 390,265.76/x
  3. Step 3: Cross multiply
    655,980.32x = 984,281.52 × 390,265.76
  4. Step 4: Simplify right side
    655,980.32x = 384,131,375,456.76
  5. Step 5: Solve for x
    x = 384,131,375,456.76/655,980.32
  6. Step 6: Final answer
    x = 585,583.69

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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.