Home / 1,275,919.29-1,913,815.32-477,142.11

Finding the Fourth Proportional to 1,275,919.29, 1,913,815.32 and 477,142.11

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Solution

The fourth proportional to 1,275,919.29, 1,913,815.32 and 477,142.11 is: 715,689.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,919.29 : 1,913,815.32 = 477,142.11 : x
  2. Step 2: Convert to fraction form
    1,275,919.29/1,913,815.32 = 477,142.11/x
  3. Step 3: Cross multiply
    1,275,919.29x = 1,913,815.32 × 477,142.11
  4. Step 4: Simplify right side
    1,275,919.29x = 913,161,879,935.13
  5. Step 5: Solve for x
    x = 913,161,879,935.13/1,275,919.29
  6. Step 6: Final answer
    x = 715,689.38

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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.