Home / 689,372.85-1,034,901.68-390,061.65

Finding the Fourth Proportional to 689,372.85, 1,034,901.68 and 390,061.65

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Solution

The fourth proportional to 689,372.85, 1,034,901.68 and 390,061.65 is: 585,569.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,372.85 : 1,034,901.68 = 390,061.65 : x
  2. Step 2: Convert to fraction form
    689,372.85/1,034,901.68 = 390,061.65/x
  3. Step 3: Cross multiply
    689,372.85x = 1,034,901.68 × 390,061.65
  4. Step 4: Simplify right side
    689,372.85x = 403,675,454,938.26
  5. Step 5: Solve for x
    x = 403,675,454,938.26/689,372.85
  6. Step 6: Final answer
    x = 585,569.12

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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.