Home / 865,847.40-1,194,765.89-478,610.49

Finding the Fourth Proportional to 865,847.40, 1,194,765.89 and 478,610.49

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Solution

The fourth proportional to 865,847.40, 1,194,765.89 and 478,610.49 is: 660,425.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,847.40 : 1,194,765.89 = 478,610.49 : x
  2. Step 2: Convert to fraction form
    865,847.40/1,194,765.89 = 478,610.49/x
  3. Step 3: Cross multiply
    865,847.40x = 1,194,765.89 × 478,610.49
  4. Step 4: Simplify right side
    865,847.40x = 571,827,488,048.19
  5. Step 5: Solve for x
    x = 571,827,488,048.19/865,847.40
  6. Step 6: Final answer
    x = 660,425.25

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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.