Home / 715,726.02-987,703.96-409,807.04

Finding the Fourth Proportional to 715,726.02, 987,703.96 and 409,807.04

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Solution

The fourth proportional to 715,726.02, 987,703.96 and 409,807.04 is: 565,534.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,726.02 : 987,703.96 = 409,807.04 : x
  2. Step 2: Convert to fraction form
    715,726.02/987,703.96 = 409,807.04/x
  3. Step 3: Cross multiply
    715,726.02x = 987,703.96 × 409,807.04
  4. Step 4: Simplify right side
    715,726.02x = 404,768,036,243.88
  5. Step 5: Solve for x
    x = 404,768,036,243.88/715,726.02
  6. Step 6: Final answer
    x = 565,534.89

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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.