Home / 812,411.16-1,218,865.86-363,509.88

Finding the Fourth Proportional to 812,411.16, 1,218,865.86 and 363,509.88

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Solution

The fourth proportional to 812,411.16, 1,218,865.86 and 363,509.88 is: 545,376.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,411.16 : 1,218,865.86 = 363,509.88 : x
  2. Step 2: Convert to fraction form
    812,411.16/1,218,865.86 = 363,509.88/x
  3. Step 3: Cross multiply
    812,411.16x = 1,218,865.86 × 363,509.88
  4. Step 4: Simplify right side
    812,411.16x = 443,069,782,504.70
  5. Step 5: Solve for x
    x = 443,069,782,504.70/812,411.16
  6. Step 6: Final answer
    x = 545,376.29

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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.