Home / 715,327.20-987,237.36-429,004.80

Finding the Fourth Proportional to 715,327.20, 987,237.36 and 429,004.80

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Solution

The fourth proportional to 715,327.20, 987,237.36 and 429,004.80 is: 592,078.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,327.20 : 987,237.36 = 429,004.80 : x
  2. Step 2: Convert to fraction form
    715,327.20/987,237.36 = 429,004.80/x
  3. Step 3: Cross multiply
    715,327.20x = 987,237.36 × 429,004.80
  4. Step 4: Simplify right side
    715,327.20x = 423,529,566,179.33
  5. Step 5: Solve for x
    x = 423,529,566,179.33/715,327.20
  6. Step 6: Final answer
    x = 592,078.10

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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.