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Finding the Fourth Proportional to 453,981.20, 680,971.80 and 404,992.40

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Solution

The fourth proportional to 453,981.20, 680,971.80 and 404,992.40 is: 607,488.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,981.20 : 680,971.80 = 404,992.40 : x
  2. Step 2: Convert to fraction form
    453,981.20/680,971.80 = 404,992.40/x
  3. Step 3: Cross multiply
    453,981.20x = 680,971.80 × 404,992.40
  4. Step 4: Simplify right side
    453,981.20x = 275,788,403,614.32
  5. Step 5: Solve for x
    x = 275,788,403,614.32/453,981.20
  6. Step 6: Final answer
    x = 607,488.60

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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.