Home / 497,853.12-687,078.40-283,060.80

Finding the Fourth Proportional to 497,853.12, 687,078.40 and 283,060.80

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Solution

The fourth proportional to 497,853.12, 687,078.40 and 283,060.80 is: 390,647.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,853.12 : 687,078.40 = 283,060.80 : x
  2. Step 2: Convert to fraction form
    497,853.12/687,078.40 = 283,060.80/x
  3. Step 3: Cross multiply
    497,853.12x = 687,078.40 × 283,060.80
  4. Step 4: Simplify right side
    497,853.12x = 194,484,961,566.72
  5. Step 5: Solve for x
    x = 194,484,961,566.72/497,853.12
  6. Step 6: Final answer
    x = 390,647.27

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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.