Home / 1,152,139.20-1,725,184.80-813,350.40

Finding the Fourth Proportional to 1,152,139.20, 1,725,184.80 and 813,350.40

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Solution

The fourth proportional to 1,152,139.20, 1,725,184.80 and 813,350.40 is: 1,217,890.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,139.20 : 1,725,184.80 = 813,350.40 : x
  2. Step 2: Convert to fraction form
    1,152,139.20/1,725,184.80 = 813,350.40/x
  3. Step 3: Cross multiply
    1,152,139.20x = 1,725,184.80 × 813,350.40
  4. Step 4: Simplify right side
    1,152,139.20x = 1,403,179,747,153.92
  5. Step 5: Solve for x
    x = 1,403,179,747,153.92/1,152,139.20
  6. Step 6: Final answer
    x = 1,217,890.81

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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.