Home / 1,217,041.60-1,678,958.64-787,461.76

Finding the Fourth Proportional to 1,217,041.60, 1,678,958.64 and 787,461.76

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Solution

The fourth proportional to 1,217,041.60, 1,678,958.64 and 787,461.76 is: 1,086,335.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,041.60 : 1,678,958.64 = 787,461.76 : x
  2. Step 2: Convert to fraction form
    1,217,041.60/1,678,958.64 = 787,461.76/x
  3. Step 3: Cross multiply
    1,217,041.60x = 1,678,958.64 × 787,461.76
  4. Step 4: Simplify right side
    1,217,041.60x = 1,322,115,725,621.61
  5. Step 5: Solve for x
    x = 1,322,115,725,621.61/1,217,041.60
  6. Step 6: Final answer
    x = 1,086,335.69

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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.