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Finding the Fourth Proportional to 453,321.60, 679,982.40 and 272,918.40

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Solution

The fourth proportional to 453,321.60, 679,982.40 and 272,918.40 is: 409,377.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,321.60 : 679,982.40 = 272,918.40 : x
  2. Step 2: Convert to fraction form
    453,321.60/679,982.40 = 272,918.40/x
  3. Step 3: Cross multiply
    453,321.60x = 679,982.40 × 272,918.40
  4. Step 4: Simplify right side
    453,321.60x = 185,579,708,636.16
  5. Step 5: Solve for x
    x = 185,579,708,636.16/453,321.60
  6. Step 6: Final answer
    x = 409,377.60

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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.