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Finding the Fourth Proportional to 472,394,689.80, 708,592,034.70 and 326,520,040.20

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Solution

The fourth proportional to 472,394,689.80, 708,592,034.70 and 326,520,040.20 is: 489,780,060.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,394,689.80 : 708,592,034.70 = 326,520,040.20 : x
  2. Step 2: Convert to fraction form
    472,394,689.80/708,592,034.70 = 326,520,040.20/x
  3. Step 3: Cross multiply
    472,394,689.80x = 708,592,034.70 × 326,520,040.20
  4. Step 4: Simplify right side
    472,394,689.80x = 231,369,499,655,643,808
  5. Step 5: Solve for x
    x = 231,369,499,655,643,808/472,394,689.80
  6. Step 6: Final answer
    x = 489,780,060.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.