Home / 812,911.20-1,219,366.80-252,002.40

Finding the Fourth Proportional to 812,911.20, 1,219,366.80 and 252,002.40

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Solution

The fourth proportional to 812,911.20, 1,219,366.80 and 252,002.40 is: 378,003.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,911.20 : 1,219,366.80 = 252,002.40 : x
  2. Step 2: Convert to fraction form
    812,911.20/1,219,366.80 = 252,002.40/x
  3. Step 3: Cross multiply
    812,911.20x = 1,219,366.80 × 252,002.40
  4. Step 4: Simplify right side
    812,911.20x = 307,283,360,080.32
  5. Step 5: Solve for x
    x = 307,283,360,080.32/812,911.20
  6. Step 6: Final answer
    x = 378,003.60

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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.