Home / 714,345.18-985,808.36-392,085.25

Finding the Fourth Proportional to 714,345.18, 985,808.36 and 392,085.25

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Solution

The fourth proportional to 714,345.18, 985,808.36 and 392,085.25 is: 541,084.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,345.18 : 985,808.36 = 392,085.25 : x
  2. Step 2: Convert to fraction form
    714,345.18/985,808.36 = 392,085.25/x
  3. Step 3: Cross multiply
    714,345.18x = 985,808.36 × 392,085.25
  4. Step 4: Simplify right side
    714,345.18x = 386,520,917,282.69
  5. Step 5: Solve for x
    x = 386,520,917,282.69/714,345.18
  6. Step 6: Final answer
    x = 541,084.24

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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.