Home / 1,108,621.20-1,662,931.80-398,672.40

Finding the Fourth Proportional to 1,108,621.20, 1,662,931.80 and 398,672.40

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Solution

The fourth proportional to 1,108,621.20, 1,662,931.80 and 398,672.40 is: 598,008.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,108,621.20 : 1,662,931.80 = 398,672.40 : x
  2. Step 2: Convert to fraction form
    1,108,621.20/1,662,931.80 = 398,672.40/x
  3. Step 3: Cross multiply
    1,108,621.20x = 1,662,931.80 × 398,672.40
  4. Step 4: Simplify right side
    1,108,621.20x = 662,965,011,742.32
  5. Step 5: Solve for x
    x = 662,965,011,742.32/1,108,621.20
  6. Step 6: Final answer
    x = 598,008.60

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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.