Home / 673,291.36-929,478.76-418,724.56

Finding the Fourth Proportional to 673,291.36, 929,478.76 and 418,724.56

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Solution

The fourth proportional to 673,291.36, 929,478.76 and 418,724.56 is: 578,049.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,291.36 : 929,478.76 = 418,724.56 : x
  2. Step 2: Convert to fraction form
    673,291.36/929,478.76 = 418,724.56/x
  3. Step 3: Cross multiply
    673,291.36x = 929,478.76 × 418,724.56
  4. Step 4: Simplify right side
    673,291.36x = 389,195,584,810.35
  5. Step 5: Solve for x
    x = 389,195,584,810.35/673,291.36
  6. Step 6: Final answer
    x = 578,049.28

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Half scale
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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.