Home / 1,240,804.09-1,711,873.60-811,335.61

Finding the Fourth Proportional to 1,240,804.09, 1,711,873.60 and 811,335.61

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Solution

The fourth proportional to 1,240,804.09, 1,711,873.60 and 811,335.61 is: 1,119,358.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,804.09 : 1,711,873.60 = 811,335.61 : x
  2. Step 2: Convert to fraction form
    1,240,804.09/1,711,873.60 = 811,335.61/x
  3. Step 3: Cross multiply
    1,240,804.09x = 1,711,873.60 × 811,335.61
  4. Step 4: Simplify right side
    1,240,804.09x = 1,388,904,011,498.90
  5. Step 5: Solve for x
    x = 1,388,904,011,498.90/1,240,804.09
  6. Step 6: Final answer
    x = 1,119,358.02

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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.