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Finding the Fourth Proportional to 864,509.76, 1,295,364.96 and 654,557.76

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Solution

The fourth proportional to 864,509.76, 1,295,364.96 and 654,557.76 is: 980,776.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,509.76 : 1,295,364.96 = 654,557.76 : x
  2. Step 2: Convert to fraction form
    864,509.76/1,295,364.96 = 654,557.76/x
  3. Step 3: Cross multiply
    864,509.76x = 1,295,364.96 × 654,557.76
  4. Step 4: Simplify right side
    864,509.76x = 847,891,186,600.09
  5. Step 5: Solve for x
    x = 847,891,186,600.09/864,509.76
  6. Step 6: Final answer
    x = 980,776.88

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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.