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Finding the Fourth Proportional to 660,014.70, 988,272.45 and 520,046.70

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Solution

The fourth proportional to 660,014.70, 988,272.45 and 520,046.70 is: 778,691.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,014.70 : 988,272.45 = 520,046.70 : x
  2. Step 2: Convert to fraction form
    660,014.70/988,272.45 = 520,046.70/x
  3. Step 3: Cross multiply
    660,014.70x = 988,272.45 × 520,046.70
  4. Step 4: Simplify right side
    660,014.70x = 513,947,826,323.42
  5. Step 5: Solve for x
    x = 513,947,826,323.42/660,014.70
  6. Step 6: Final answer
    x = 778,691.48

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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.