Home / 725,520.75-1,001,235.65-403,244.43

Finding the Fourth Proportional to 725,520.75, 1,001,235.65 and 403,244.43

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Solution

The fourth proportional to 725,520.75, 1,001,235.65 and 403,244.43 is: 556,486.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,520.75 : 1,001,235.65 = 403,244.43 : x
  2. Step 2: Convert to fraction form
    725,520.75/1,001,235.65 = 403,244.43/x
  3. Step 3: Cross multiply
    725,520.75x = 1,001,235.65 × 403,244.43
  4. Step 4: Simplify right side
    725,520.75x = 403,742,696,963.71
  5. Step 5: Solve for x
    x = 403,742,696,963.71/725,520.75
  6. Step 6: Final answer
    x = 556,486.77

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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.