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Finding the Fourth Proportional to 707,765.80, 976,632.24 and 401,731.60

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Solution

The fourth proportional to 707,765.80, 976,632.24 and 401,731.60 is: 554,341.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,765.80 : 976,632.24 = 401,731.60 : x
  2. Step 2: Convert to fraction form
    707,765.80/976,632.24 = 401,731.60/x
  3. Step 3: Cross multiply
    707,765.80x = 976,632.24 × 401,731.60
  4. Step 4: Simplify right side
    707,765.80x = 392,344,032,386.78
  5. Step 5: Solve for x
    x = 392,344,032,386.78/707,765.80
  6. Step 6: Final answer
    x = 554,341.61

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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.