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Finding the Fourth Proportional to 713,351.88, 984,424.86 and 391,064.76

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Solution

The fourth proportional to 713,351.88, 984,424.86 and 391,064.76 is: 539,668.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,351.88 : 984,424.86 = 391,064.76 : x
  2. Step 2: Convert to fraction form
    713,351.88/984,424.86 = 391,064.76/x
  3. Step 3: Cross multiply
    713,351.88x = 984,424.86 × 391,064.76
  4. Step 4: Simplify right side
    713,351.88x = 384,973,871,613.93
  5. Step 5: Solve for x
    x = 384,973,871,613.93/713,351.88
  6. Step 6: Final answer
    x = 539,668.97

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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.