Home / 1,216,337.85-1,678,493.61-665,043.48

Finding the Fourth Proportional to 1,216,337.85, 1,678,493.61 and 665,043.48

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Solution

The fourth proportional to 1,216,337.85, 1,678,493.61 and 665,043.48 is: 917,731.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,337.85 : 1,678,493.61 = 665,043.48 : x
  2. Step 2: Convert to fraction form
    1,216,337.85/1,678,493.61 = 665,043.48/x
  3. Step 3: Cross multiply
    1,216,337.85x = 1,678,493.61 × 665,043.48
  4. Step 4: Simplify right side
    1,216,337.85x = 1,116,271,231,552.16
  5. Step 5: Solve for x
    x = 1,116,271,231,552.16/1,216,337.85
  6. Step 6: Final answer
    x = 917,731.23

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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.