Home / 712,265.64-982,926.72-389,996.52

Finding the Fourth Proportional to 712,265.64, 982,926.72 and 389,996.52

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Solution

The fourth proportional to 712,265.64, 982,926.72 and 389,996.52 is: 538,195.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,265.64 : 982,926.72 = 389,996.52 : x
  2. Step 2: Convert to fraction form
    712,265.64/982,926.72 = 389,996.52/x
  3. Step 3: Cross multiply
    712,265.64x = 982,926.72 × 389,996.52
  4. Step 4: Simplify right side
    712,265.64x = 383,338,000,215.01
  5. Step 5: Solve for x
    x = 383,338,000,215.01/712,265.64
  6. Step 6: Final answer
    x = 538,195.27

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.