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Finding the Fourth Proportional to 710,466.52, 980,432.20 and 388,169.68

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Solution

The fourth proportional to 710,466.52, 980,432.20 and 388,169.68 is: 535,667.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,466.52 : 980,432.20 = 388,169.68 : x
  2. Step 2: Convert to fraction form
    710,466.52/980,432.20 = 388,169.68/x
  3. Step 3: Cross multiply
    710,466.52x = 980,432.20 × 388,169.68
  4. Step 4: Simplify right side
    710,466.52x = 380,574,053,335.70
  5. Step 5: Solve for x
    x = 380,574,053,335.70/710,466.52
  6. Step 6: Final answer
    x = 535,667.82

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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.