Home / 916,510.40-1,375,111.20-443,614.40

Finding the Fourth Proportional to 916,510.40, 1,375,111.20 and 443,614.40

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Solution

The fourth proportional to 916,510.40, 1,375,111.20 and 443,614.40 is: 665,588.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,510.40 : 1,375,111.20 = 443,614.40 : x
  2. Step 2: Convert to fraction form
    916,510.40/1,375,111.20 = 443,614.40/x
  3. Step 3: Cross multiply
    916,510.40x = 1,375,111.20 × 443,614.40
  4. Step 4: Simplify right side
    916,510.40x = 610,019,129,921.28
  5. Step 5: Solve for x
    x = 610,019,129,921.28/916,510.40
  6. Step 6: Final answer
    x = 665,588.88

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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.