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Finding the Fourth Proportional to 717,364.65, 989,951.15 and 395,104.76

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Solution

The fourth proportional to 717,364.65, 989,951.15 and 395,104.76 is: 545,237.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,364.65 : 989,951.15 = 395,104.76 : x
  2. Step 2: Convert to fraction form
    717,364.65/989,951.15 = 395,104.76/x
  3. Step 3: Cross multiply
    717,364.65x = 989,951.15 × 395,104.76
  4. Step 4: Simplify right side
    717,364.65x = 391,134,407,570.48
  5. Step 5: Solve for x
    x = 391,134,407,570.48/717,364.65
  6. Step 6: Final answer
    x = 545,237.92

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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.