Home / 1,077,781.60-1,616,672.40-678,872.80

Finding the Fourth Proportional to 1,077,781.60, 1,616,672.40 and 678,872.80

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Solution

The fourth proportional to 1,077,781.60, 1,616,672.40 and 678,872.80 is: 1,018,309.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,077,781.60 : 1,616,672.40 = 678,872.80 : x
  2. Step 2: Convert to fraction form
    1,077,781.60/1,616,672.40 = 678,872.80/x
  3. Step 3: Cross multiply
    1,077,781.60x = 1,616,672.40 × 678,872.80
  4. Step 4: Simplify right side
    1,077,781.60x = 1,097,514,918,870.72
  5. Step 5: Solve for x
    x = 1,097,514,918,870.72/1,077,781.60
  6. Step 6: Final answer
    x = 1,018,309.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.