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Finding the Fourth Proportional to 655,291.20, 983,374.20 and 370,981.20

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Solution

The fourth proportional to 655,291.20, 983,374.20 and 370,981.20 is: 556,719.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,291.20 : 983,374.20 = 370,981.20 : x
  2. Step 2: Convert to fraction form
    655,291.20/983,374.20 = 370,981.20/x
  3. Step 3: Cross multiply
    655,291.20x = 983,374.20 × 370,981.20
  4. Step 4: Simplify right side
    655,291.20x = 364,813,340,765.04
  5. Step 5: Solve for x
    x = 364,813,340,765.04/655,291.20
  6. Step 6: Final answer
    x = 556,719.43

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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.