Home / 1,330,309.40-1,995,755.70-431,598.20

Finding the Fourth Proportional to 1,330,309.40, 1,995,755.70 and 431,598.20

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Solution

The fourth proportional to 1,330,309.40, 1,995,755.70 and 431,598.20 is: 647,491.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,309.40 : 1,995,755.70 = 431,598.20 : x
  2. Step 2: Convert to fraction form
    1,330,309.40/1,995,755.70 = 431,598.20/x
  3. Step 3: Cross multiply
    1,330,309.40x = 1,995,755.70 × 431,598.20
  4. Step 4: Simplify right side
    1,330,309.40x = 861,364,567,759.74
  5. Step 5: Solve for x
    x = 861,364,567,759.74/1,330,309.40
  6. Step 6: Final answer
    x = 647,491.91

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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.