Home / 958,780.70-1,438,812.56-397,815.20

Finding the Fourth Proportional to 958,780.70, 1,438,812.56 and 397,815.20

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Solution

The fourth proportional to 958,780.70, 1,438,812.56 and 397,815.20 is: 596,988.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    958,780.70 : 1,438,812.56 = 397,815.20 : x
  2. Step 2: Convert to fraction form
    958,780.70/1,438,812.56 = 397,815.20/x
  3. Step 3: Cross multiply
    958,780.70x = 1,438,812.56 × 397,815.20
  4. Step 4: Simplify right side
    958,780.70x = 572,381,506,318.91
  5. Step 5: Solve for x
    x = 572,381,506,318.91/958,780.70
  6. Step 6: Final answer
    x = 596,988.97

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1.5x scale

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.