Home / 648,005.85-972,008.78-487,042.65

Finding the Fourth Proportional to 648,005.85, 972,008.78 and 487,042.65

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Solution

The fourth proportional to 648,005.85, 972,008.78 and 487,042.65 is: 730,563.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,005.85 : 972,008.78 = 487,042.65 : x
  2. Step 2: Convert to fraction form
    648,005.85/972,008.78 = 487,042.65/x
  3. Step 3: Cross multiply
    648,005.85x = 972,008.78 × 487,042.65
  4. Step 4: Simplify right side
    648,005.85x = 473,409,729,599.25
  5. Step 5: Solve for x
    x = 473,409,729,599.25/648,005.85
  6. Step 6: Final answer
    x = 730,563.98

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Similar ratio
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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.