Home / 676,640.85-1,014,643.42-392,412.18

Finding the Fourth Proportional to 676,640.85, 1,014,643.42 and 392,412.18

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Solution

The fourth proportional to 676,640.85, 1,014,643.42 and 392,412.18 is: 588,433.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,640.85 : 1,014,643.42 = 392,412.18 : x
  2. Step 2: Convert to fraction form
    676,640.85/1,014,643.42 = 392,412.18/x
  3. Step 3: Cross multiply
    676,640.85x = 1,014,643.42 × 392,412.18
  4. Step 4: Simplify right side
    676,640.85x = 398,158,436,364.86
  5. Step 5: Solve for x
    x = 398,158,436,364.86/676,640.85
  6. Step 6: Final answer
    x = 588,433.93

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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.