Home / 715,223.69-987,004.55-392,926.85

Finding the Fourth Proportional to 715,223.69, 987,004.55 and 392,926.85

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Solution

The fourth proportional to 715,223.69, 987,004.55 and 392,926.85 is: 542,236.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,223.69 : 987,004.55 = 392,926.85 : x
  2. Step 2: Convert to fraction form
    715,223.69/987,004.55 = 392,926.85/x
  3. Step 3: Cross multiply
    715,223.69x = 987,004.55 × 392,926.85
  4. Step 4: Simplify right side
    715,223.69x = 387,820,581,867.51
  5. Step 5: Solve for x
    x = 387,820,581,867.51/715,223.69
  6. Step 6: Final answer
    x = 542,236.77

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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.