Home / 714,238.60-985,677.70-391,960.23

Finding the Fourth Proportional to 714,238.60, 985,677.70 and 391,960.23

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Solution

The fourth proportional to 714,238.60, 985,677.70 and 391,960.23 is: 540,920.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,238.60 : 985,677.70 = 391,960.23 : x
  2. Step 2: Convert to fraction form
    714,238.60/985,677.70 = 391,960.23/x
  3. Step 3: Cross multiply
    714,238.60x = 985,677.70 × 391,960.23
  4. Step 4: Simplify right side
    714,238.60x = 386,346,456,038.07
  5. Step 5: Solve for x
    x = 386,346,456,038.07/714,238.60
  6. Step 6: Final answer
    x = 540,920.72

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Double scale
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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.