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Finding the Fourth Proportional to 452,849.20, 679,273.80 and 407,748.40

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Solution

The fourth proportional to 452,849.20, 679,273.80 and 407,748.40 is: 611,622.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,849.20 : 679,273.80 = 407,748.40 : x
  2. Step 2: Convert to fraction form
    452,849.20/679,273.80 = 407,748.40/x
  3. Step 3: Cross multiply
    452,849.20x = 679,273.80 × 407,748.40
  4. Step 4: Simplify right side
    452,849.20x = 276,972,805,111.92
  5. Step 5: Solve for x
    x = 276,972,805,111.92/452,849.20
  6. Step 6: Final answer
    x = 611,622.60

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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.