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Finding the Fourth Proportional to 453,043.60, 679,784.10 and 319,636.60

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Solution

The fourth proportional to 453,043.60, 679,784.10 and 319,636.60 is: 479,609.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,043.60 : 679,784.10 = 319,636.60 : x
  2. Step 2: Convert to fraction form
    453,043.60/679,784.10 = 319,636.60/x
  3. Step 3: Cross multiply
    453,043.60x = 679,784.10 × 319,636.60
  4. Step 4: Simplify right side
    453,043.60x = 217,283,878,458.06
  5. Step 5: Solve for x
    x = 217,283,878,458.06/453,043.60
  6. Step 6: Final answer
    x = 479,609.20

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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.