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Finding the Fourth Proportional to 710,151.68, 980,004.06 and 387,861.92

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Solution

The fourth proportional to 710,151.68, 980,004.06 and 387,861.92 is: 535,246.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,151.68 : 980,004.06 = 387,861.92 : x
  2. Step 2: Convert to fraction form
    710,151.68/980,004.06 = 387,861.92/x
  3. Step 3: Cross multiply
    710,151.68x = 980,004.06 × 387,861.92
  4. Step 4: Simplify right side
    710,151.68x = 380,106,256,319.40
  5. Step 5: Solve for x
    x = 380,106,256,319.40/710,151.68
  6. Step 6: Final answer
    x = 535,246.58

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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.