Home / 987,187.80-1,479,615.30-418,567.80

Finding the Fourth Proportional to 987,187.80, 1,479,615.30 and 418,567.80

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Solution

The fourth proportional to 987,187.80, 1,479,615.30 and 418,567.80 is: 627,357.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,187.80 : 1,479,615.30 = 418,567.80 : x
  2. Step 2: Convert to fraction form
    987,187.80/1,479,615.30 = 418,567.80/x
  3. Step 3: Cross multiply
    987,187.80x = 1,479,615.30 × 418,567.80
  4. Step 4: Simplify right side
    987,187.80x = 619,319,320,967.34
  5. Step 5: Solve for x
    x = 619,319,320,967.34/987,187.80
  6. Step 6: Final answer
    x = 627,357.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.