Home / 1,216,822.72-1,679,439.96-781,783.88

Finding the Fourth Proportional to 1,216,822.72, 1,679,439.96 and 781,783.88

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Solution

The fourth proportional to 1,216,822.72, 1,679,439.96 and 781,783.88 is: 1,079,006.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,822.72 : 1,679,439.96 = 781,783.88 : x
  2. Step 2: Convert to fraction form
    1,216,822.72/1,679,439.96 = 781,783.88/x
  3. Step 3: Cross multiply
    1,216,822.72x = 1,679,439.96 × 781,783.88
  4. Step 4: Simplify right side
    1,216,822.72x = 1,312,959,088,155.84
  5. Step 5: Solve for x
    x = 1,312,959,088,155.84/1,216,822.72
  6. Step 6: Final answer
    x = 1,079,006.06

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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.