Home / 725,313.12-1,000,888.10-403,012.20

Finding the Fourth Proportional to 725,313.12, 1,000,888.10 and 403,012.20

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Solution

The fourth proportional to 725,313.12, 1,000,888.10 and 403,012.20 is: 556,132.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,313.12 : 1,000,888.10 = 403,012.20 : x
  2. Step 2: Convert to fraction form
    725,313.12/1,000,888.10 = 403,012.20/x
  3. Step 3: Cross multiply
    725,313.12x = 1,000,888.10 × 403,012.20
  4. Step 4: Simplify right side
    725,313.12x = 403,370,113,119.76
  5. Step 5: Solve for x
    x = 403,370,113,119.76/725,313.12
  6. Step 6: Final answer
    x = 556,132.38

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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.