Home / 1,678,445.78-2,517,666.38-779,395.90

Finding the Fourth Proportional to 1,678,445.78, 2,517,666.38 and 779,395.90

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Solution

The fourth proportional to 1,678,445.78, 2,517,666.38 and 779,395.90 is: 1,169,092.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678,445.78 : 2,517,666.38 = 779,395.90 : x
  2. Step 2: Convert to fraction form
    1,678,445.78/2,517,666.38 = 779,395.90/x
  3. Step 3: Cross multiply
    1,678,445.78x = 2,517,666.38 × 779,395.90
  4. Step 4: Simplify right side
    1,678,445.78x = 1,962,258,854,139.84
  5. Step 5: Solve for x
    x = 1,962,258,854,139.84/1,678,445.78
  6. Step 6: Final answer
    x = 1,169,092.79

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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.