Home / 2,153,616.80-2,972,011.12-1,186,781.69

Finding the Fourth Proportional to 2,153,616.80, 2,972,011.12 and 1,186,781.69

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Solution

The fourth proportional to 2,153,616.80, 2,972,011.12 and 1,186,781.69 is: 1,637,769.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,153,616.80 : 2,972,011.12 = 1,186,781.69 : x
  2. Step 2: Convert to fraction form
    2,153,616.80/2,972,011.12 = 1,186,781.69/x
  3. Step 3: Cross multiply
    2,153,616.80x = 2,972,011.12 × 1,186,781.69
  4. Step 4: Simplify right side
    2,153,616.80x = 3,527,128,384,155.47
  5. Step 5: Solve for x
    x = 3,527,128,384,155.47/2,153,616.80
  6. Step 6: Final answer
    x = 1,637,769.72

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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.