Home / 916,542.40-1,375,159.20-443,646.40

Finding the Fourth Proportional to 916,542.40, 1,375,159.20 and 443,646.40

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Solution

The fourth proportional to 916,542.40, 1,375,159.20 and 443,646.40 is: 665,636.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,542.40 : 1,375,159.20 = 443,646.40 : x
  2. Step 2: Convert to fraction form
    916,542.40/1,375,159.20 = 443,646.40/x
  3. Step 3: Cross multiply
    916,542.40x = 1,375,159.20 × 443,646.40
  4. Step 4: Simplify right side
    916,542.40x = 610,084,428,506.88
  5. Step 5: Solve for x
    x = 610,084,428,506.88/916,542.40
  6. Step 6: Final answer
    x = 665,636.89

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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.