Home / 714,430.11-985,910.09-392,145.69

Finding the Fourth Proportional to 714,430.11, 985,910.09 and 392,145.69

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Solution

The fourth proportional to 714,430.11, 985,910.09 and 392,145.69 is: 541,159.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,430.11 : 985,910.09 = 392,145.69 : x
  2. Step 2: Convert to fraction form
    714,430.11/985,910.09 = 392,145.69/x
  3. Step 3: Cross multiply
    714,430.11x = 985,910.09 × 392,145.69
  4. Step 4: Simplify right side
    714,430.11x = 386,620,392,521.01
  5. Step 5: Solve for x
    x = 386,620,392,521.01/714,430.11
  6. Step 6: Final answer
    x = 541,159.15

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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.