Home / 1,555,105.30-2,332,657.95-1,289,384.80

Finding the Fourth Proportional to 1,555,105.30, 2,332,657.95 and 1,289,384.80

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Solution

The fourth proportional to 1,555,105.30, 2,332,657.95 and 1,289,384.80 is: 1,934,077.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555,105.30 : 2,332,657.95 = 1,289,384.80 : x
  2. Step 2: Convert to fraction form
    1,555,105.30/2,332,657.95 = 1,289,384.80/x
  3. Step 3: Cross multiply
    1,555,105.30x = 2,332,657.95 × 1,289,384.80
  4. Step 4: Simplify right side
    1,555,105.30x = 3,007,693,704,329.16
  5. Step 5: Solve for x
    x = 3,007,693,704,329.16/1,555,105.30
  6. Step 6: Final answer
    x = 1,934,077.20

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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.