Home / 728,574.14-1,005,436.70-406,304.61

Finding the Fourth Proportional to 728,574.14, 1,005,436.70 and 406,304.61

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Solution

The fourth proportional to 728,574.14, 1,005,436.70 and 406,304.61 is: 560,702.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,574.14 : 1,005,436.70 = 406,304.61 : x
  2. Step 2: Convert to fraction form
    728,574.14/1,005,436.70 = 406,304.61/x
  3. Step 3: Cross multiply
    728,574.14x = 1,005,436.70 × 406,304.61
  4. Step 4: Simplify right side
    728,574.14x = 408,513,561,994.92
  5. Step 5: Solve for x
    x = 408,513,561,994.92/728,574.14
  6. Step 6: Final answer
    x = 560,702.80

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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.