Home / 687,365.10-1,031,138.10-255,023.67

Finding the Fourth Proportional to 687,365.10, 1,031,138.10 and 255,023.67

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Solution

The fourth proportional to 687,365.10, 1,031,138.10 and 255,023.67 is: 382,569.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,365.10 : 1,031,138.10 = 255,023.67 : x
  2. Step 2: Convert to fraction form
    687,365.10/1,031,138.10 = 255,023.67/x
  3. Step 3: Cross multiply
    687,365.10x = 1,031,138.10 × 255,023.67
  4. Step 4: Simplify right side
    687,365.10x = 262,964,622,538.83
  5. Step 5: Solve for x
    x = 262,964,622,538.83/687,365.10
  6. Step 6: Final answer
    x = 382,569.06

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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.