Home / 563,671.12-777,845.52-309,016.72

Finding the Fourth Proportional to 563,671.12, 777,845.52 and 309,016.72

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Solution

The fourth proportional to 563,671.12, 777,845.52 and 309,016.72 is: 426,431.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,671.12 : 777,845.52 = 309,016.72 : x
  2. Step 2: Convert to fraction form
    563,671.12/777,845.52 = 309,016.72/x
  3. Step 3: Cross multiply
    563,671.12x = 777,845.52 × 309,016.72
  4. Step 4: Simplify right side
    563,671.12x = 240,367,271,257.09
  5. Step 5: Solve for x
    x = 240,367,271,257.09/563,671.12
  6. Step 6: Final answer
    x = 426,431.77

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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.