Home / 1,126,421.10-1,689,631.65-327,728.70

Finding the Fourth Proportional to 1,126,421.10, 1,689,631.65 and 327,728.70

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Solution

The fourth proportional to 1,126,421.10, 1,689,631.65 and 327,728.70 is: 491,593.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,421.10 : 1,689,631.65 = 327,728.70 : x
  2. Step 2: Convert to fraction form
    1,126,421.10/1,689,631.65 = 327,728.70/x
  3. Step 3: Cross multiply
    1,126,421.10x = 1,689,631.65 × 327,728.70
  4. Step 4: Simplify right side
    1,126,421.10x = 553,740,784,133.36
  5. Step 5: Solve for x
    x = 553,740,784,133.36/1,126,421.10
  6. Step 6: Final answer
    x = 491,593.05

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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.