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Finding the Fourth Proportional to 715,544.73, 986,411.25 and 500,015.88

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Solution

The fourth proportional to 715,544.73, 986,411.25 and 500,015.88 is: 689,294.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,544.73 : 986,411.25 = 500,015.88 : x
  2. Step 2: Convert to fraction form
    715,544.73/986,411.25 = 500,015.88/x
  3. Step 3: Cross multiply
    715,544.73x = 986,411.25 × 500,015.88
  4. Step 4: Simplify right side
    715,544.73x = 493,221,289,210.65
  5. Step 5: Solve for x
    x = 493,221,289,210.65/715,544.73
  6. Step 6: Final answer
    x = 689,294.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.