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Finding the Fourth Proportional to 710,163, 980,024.90 and 387,873.86

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Solution

The fourth proportional to 710,163, 980,024.90 and 387,873.86 is: 535,265.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,163 : 980,024.90 = 387,873.86 : x
  2. Step 2: Convert to fraction form
    710,163/980,024.90 = 387,873.86/x
  3. Step 3: Cross multiply
    710,163x = 980,024.90 × 387,873.86
  4. Step 4: Simplify right side
    710,163x = 380,126,034,019.62
  5. Step 5: Solve for x
    x = 380,126,034,019.62/710,163
  6. Step 6: Final answer
    x = 535,265.90

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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.