Home / 1,152,109.20-1,725,139.80-813,320.40

Finding the Fourth Proportional to 1,152,109.20, 1,725,139.80 and 813,320.40

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Solution

The fourth proportional to 1,152,109.20, 1,725,139.80 and 813,320.40 is: 1,217,845.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,109.20 : 1,725,139.80 = 813,320.40 : x
  2. Step 2: Convert to fraction form
    1,152,109.20/1,725,139.80 = 813,320.40/x
  3. Step 3: Cross multiply
    1,152,109.20x = 1,725,139.80 × 813,320.40
  4. Step 4: Simplify right side
    1,152,109.20x = 1,403,091,392,191.92
  5. Step 5: Solve for x
    x = 1,403,091,392,191.92/1,152,109.20
  6. Step 6: Final answer
    x = 1,217,845.84

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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.