Home / 1,330,478.66-1,995,689.72-431,919.12

Finding the Fourth Proportional to 1,330,478.66, 1,995,689.72 and 431,919.12

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Solution

The fourth proportional to 1,330,478.66, 1,995,689.72 and 431,919.12 is: 647,869.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,478.66 : 1,995,689.72 = 431,919.12 : x
  2. Step 2: Convert to fraction form
    1,330,478.66/1,995,689.72 = 431,919.12/x
  3. Step 3: Cross multiply
    1,330,478.66x = 1,995,689.72 × 431,919.12
  4. Step 4: Simplify right side
    1,330,478.66x = 861,976,547,655.45
  5. Step 5: Solve for x
    x = 861,976,547,655.45/1,330,478.66
  6. Step 6: Final answer
    x = 647,869.50

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Double scale
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1.5x scale

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.