Home / 1,240,903.20-1,861,678.80-399,475.20

Finding the Fourth Proportional to 1,240,903.20, 1,861,678.80 and 399,475.20

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Solution

The fourth proportional to 1,240,903.20, 1,861,678.80 and 399,475.20 is: 599,317.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,903.20 : 1,861,678.80 = 399,475.20 : x
  2. Step 2: Convert to fraction form
    1,240,903.20/1,861,678.80 = 399,475.20/x
  3. Step 3: Cross multiply
    1,240,903.20x = 1,861,678.80 × 399,475.20
  4. Step 4: Simplify right side
    1,240,903.20x = 743,694,510,965.76
  5. Step 5: Solve for x
    x = 743,694,510,965.76/1,240,903.20
  6. Step 6: Final answer
    x = 599,317.10

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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.