Home / 672,875.20-1,009,140.42-199,449.84

Finding the Fourth Proportional to 672,875.20, 1,009,140.42 and 199,449.84

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Solution

The fourth proportional to 672,875.20, 1,009,140.42 and 199,449.84 is: 299,123.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,875.20 : 1,009,140.42 = 199,449.84 : x
  2. Step 2: Convert to fraction form
    672,875.20/1,009,140.42 = 199,449.84/x
  3. Step 3: Cross multiply
    672,875.20x = 1,009,140.42 × 199,449.84
  4. Step 4: Simplify right side
    672,875.20x = 201,272,899,838.75
  5. Step 5: Solve for x
    x = 201,272,899,838.75/672,875.20
  6. Step 6: Final answer
    x = 299,123.67

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Double scale
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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.