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Finding the Fourth Proportional to 560,581,653.30, 840,620,537.55 and 215,420,565.30

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Solution

The fourth proportional to 560,581,653.30, 840,620,537.55 and 215,420,565.30 is: 323,034,031.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,581,653.30 : 840,620,537.55 = 215,420,565.30 : x
  2. Step 2: Convert to fraction form
    560,581,653.30/840,620,537.55 = 215,420,565.30/x
  3. Step 3: Cross multiply
    560,581,653.30x = 840,620,537.55 × 215,420,565.30
  4. Step 4: Simplify right side
    560,581,653.30x = 181,086,951,401,810,880
  5. Step 5: Solve for x
    x = 181,086,951,401,810,880/560,581,653.30
  6. Step 6: Final answer
    x = 323,034,031.41

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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.