Home / 714,209.40-985,560.75-391,940.16

Finding the Fourth Proportional to 714,209.40, 985,560.75 and 391,940.16

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Solution

The fourth proportional to 714,209.40, 985,560.75 and 391,940.16 is: 540,850.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,209.40 : 985,560.75 = 391,940.16 : x
  2. Step 2: Convert to fraction form
    714,209.40/985,560.75 = 391,940.16/x
  3. Step 3: Cross multiply
    714,209.40x = 985,560.75 × 391,940.16
  4. Step 4: Simplify right side
    714,209.40x = 386,280,838,044.72
  5. Step 5: Solve for x
    x = 386,280,838,044.72/714,209.40
  6. Step 6: Final answer
    x = 540,850.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.