Home / 664,122.93-916,462.47-392,278.83

Finding the Fourth Proportional to 664,122.93, 916,462.47 and 392,278.83

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Solution

The fourth proportional to 664,122.93, 916,462.47 and 392,278.83 is: 541,328.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,122.93 : 916,462.47 = 392,278.83 : x
  2. Step 2: Convert to fraction form
    664,122.93/916,462.47 = 392,278.83/x
  3. Step 3: Cross multiply
    664,122.93x = 916,462.47 × 392,278.83
  4. Step 4: Simplify right side
    664,122.93x = 359,508,825,470.51
  5. Step 5: Solve for x
    x = 359,508,825,470.51/664,122.93
  6. Step 6: Final answer
    x = 541,328.73

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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.