Home / 714,257.48-985,703.63-391,979.13

Finding the Fourth Proportional to 714,257.48, 985,703.63 and 391,979.13

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Solution

The fourth proportional to 714,257.48, 985,703.63 and 391,979.13 is: 540,946.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,257.48 : 985,703.63 = 391,979.13 : x
  2. Step 2: Convert to fraction form
    714,257.48/985,703.63 = 391,979.13/x
  3. Step 3: Cross multiply
    714,257.48x = 985,703.63 × 391,979.13
  4. Step 4: Simplify right side
    714,257.48x = 386,375,251,325.24
  5. Step 5: Solve for x
    x = 386,375,251,325.24/714,257.48
  6. Step 6: Final answer
    x = 540,946.73

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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.