Home / 725,455.68-1,001,130.90-403,164.78

Finding the Fourth Proportional to 725,455.68, 1,001,130.90 and 403,164.78

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Solution

The fourth proportional to 725,455.68, 1,001,130.90 and 403,164.78 is: 556,368.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,455.68 : 1,001,130.90 = 403,164.78 : x
  2. Step 2: Convert to fraction form
    725,455.68/1,001,130.90 = 403,164.78/x
  3. Step 3: Cross multiply
    725,455.68x = 1,001,130.90 × 403,164.78
  4. Step 4: Simplify right side
    725,455.68x = 403,620,719,049.70
  5. Step 5: Solve for x
    x = 403,620,719,049.70/725,455.68
  6. Step 6: Final answer
    x = 556,368.54

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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.