Home / 648,021.20-972,031.80-448,566.80

Finding the Fourth Proportional to 648,021.20, 972,031.80 and 448,566.80

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Solution

The fourth proportional to 648,021.20, 972,031.80 and 448,566.80 is: 672,850.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,021.20 : 972,031.80 = 448,566.80 : x
  2. Step 2: Convert to fraction form
    648,021.20/972,031.80 = 448,566.80/x
  3. Step 3: Cross multiply
    648,021.20x = 972,031.80 × 448,566.80
  4. Step 4: Simplify right side
    648,021.20x = 436,021,194,024.24
  5. Step 5: Solve for x
    x = 436,021,194,024.24/648,021.20
  6. Step 6: Final answer
    x = 672,850.20

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Double scale
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Similar ratio
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1.5x scale

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.