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Finding the Fourth Proportional to 717,873.62, 990,672.24 and 395,595.25

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Solution

The fourth proportional to 717,873.62, 990,672.24 and 395,595.25 is: 545,925.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,873.62 : 990,672.24 = 395,595.25 : x
  2. Step 2: Convert to fraction form
    717,873.62/990,672.24 = 395,595.25/x
  3. Step 3: Cross multiply
    717,873.62x = 990,672.24 × 395,595.25
  4. Step 4: Simplify right side
    717,873.62x = 391,905,232,450.86
  5. Step 5: Solve for x
    x = 391,905,232,450.86/717,873.62
  6. Step 6: Final answer
    x = 545,925.11

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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.