Home / 453,109.20-679,663.80-408,008.40

Finding the Fourth Proportional to 453,109.20, 679,663.80 and 408,008.40

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Solution

The fourth proportional to 453,109.20, 679,663.80 and 408,008.40 is: 612,012.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,109.20 : 679,663.80 = 408,008.40 : x
  2. Step 2: Convert to fraction form
    453,109.20/679,663.80 = 408,008.40/x
  3. Step 3: Cross multiply
    453,109.20x = 679,663.80 × 408,008.40
  4. Step 4: Simplify right side
    453,109.20x = 277,308,539,575.92
  5. Step 5: Solve for x
    x = 277,308,539,575.92/453,109.20
  6. Step 6: Final answer
    x = 612,012.60

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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.