Home / 879,665.85-1,213,809.78-492,461.13

Finding the Fourth Proportional to 879,665.85, 1,213,809.78 and 492,461.13

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Solution

The fourth proportional to 879,665.85, 1,213,809.78 and 492,461.13 is: 679,524.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,665.85 : 1,213,809.78 = 492,461.13 : x
  2. Step 2: Convert to fraction form
    879,665.85/1,213,809.78 = 492,461.13/x
  3. Step 3: Cross multiply
    879,665.85x = 1,213,809.78 × 492,461.13
  4. Step 4: Simplify right side
    879,665.85x = 597,754,135,863.85
  5. Step 5: Solve for x
    x = 597,754,135,863.85/879,665.85
  6. Step 6: Final answer
    x = 679,524.09

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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.