Home / 687,360.58-1,031,131.33-255,019.15

Finding the Fourth Proportional to 687,360.58, 1,031,131.33 and 255,019.15

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Solution

The fourth proportional to 687,360.58, 1,031,131.33 and 255,019.15 is: 382,562.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,360.58 : 1,031,131.33 = 255,019.15 : x
  2. Step 2: Convert to fraction form
    687,360.58/1,031,131.33 = 255,019.15/x
  3. Step 3: Cross multiply
    687,360.58x = 1,031,131.33 × 255,019.15
  4. Step 4: Simplify right side
    687,360.58x = 262,958,235,966.34
  5. Step 5: Solve for x
    x = 262,958,235,966.34/687,360.58
  6. Step 6: Final answer
    x = 382,562.29

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.