Home / 840,105.20-1,159,006.43-486,253.23

Finding the Fourth Proportional to 840,105.20, 1,159,006.43 and 486,253.23

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Solution

The fourth proportional to 840,105.20, 1,159,006.43 and 486,253.23 is: 670,833.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,105.20 : 1,159,006.43 = 486,253.23 : x
  2. Step 2: Convert to fraction form
    840,105.20/1,159,006.43 = 486,253.23/x
  3. Step 3: Cross multiply
    840,105.20x = 1,159,006.43 × 486,253.23
  4. Step 4: Simplify right side
    840,105.20x = 563,570,617,747.00
  5. Step 5: Solve for x
    x = 563,570,617,747.00/840,105.20
  6. Step 6: Final answer
    x = 670,833.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.