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Finding the Fourth Proportional to 656,231.20, 980,750.44 and 479,111.20

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Solution

The fourth proportional to 656,231.20, 980,750.44 and 479,111.20 is: 716,041.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,231.20 : 980,750.44 = 479,111.20 : x
  2. Step 2: Convert to fraction form
    656,231.20/980,750.44 = 479,111.20/x
  3. Step 3: Cross multiply
    656,231.20x = 980,750.44 × 479,111.20
  4. Step 4: Simplify right side
    656,231.20x = 469,888,520,208.93
  5. Step 5: Solve for x
    x = 469,888,520,208.93/656,231.20
  6. Step 6: Final answer
    x = 716,041.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.