Home / 1,120,158.40-1,680,043.20-409,820.80

Finding the Fourth Proportional to 1,120,158.40, 1,680,043.20 and 409,820.80

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Solution

The fourth proportional to 1,120,158.40, 1,680,043.20 and 409,820.80 is: 614,660.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,158.40 : 1,680,043.20 = 409,820.80 : x
  2. Step 2: Convert to fraction form
    1,120,158.40/1,680,043.20 = 409,820.80/x
  3. Step 3: Cross multiply
    1,120,158.40x = 1,680,043.20 × 409,820.80
  4. Step 4: Simplify right side
    1,120,158.40x = 688,516,648,258.56
  5. Step 5: Solve for x
    x = 688,516,648,258.56/1,120,158.40
  6. Step 6: Final answer
    x = 614,660.08

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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.