Home / 712,308.96-982,977.12-406,377.36

Finding the Fourth Proportional to 712,308.96, 982,977.12 and 406,377.36

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Solution

The fourth proportional to 712,308.96, 982,977.12 and 406,377.36 is: 560,795.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,308.96 : 982,977.12 = 406,377.36 : x
  2. Step 2: Convert to fraction form
    712,308.96/982,977.12 = 406,377.36/x
  3. Step 3: Cross multiply
    712,308.96x = 982,977.12 × 406,377.36
  4. Step 4: Simplify right side
    712,308.96x = 399,459,646,966.00
  5. Step 5: Solve for x
    x = 399,459,646,966.00/712,308.96
  6. Step 6: Final answer
    x = 560,795.48

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Double scale
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Similar ratio
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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.