Home / 1,330,397.40-1,995,887.70-431,686.20

Finding the Fourth Proportional to 1,330,397.40, 1,995,887.70 and 431,686.20

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Solution

The fourth proportional to 1,330,397.40, 1,995,887.70 and 431,686.20 is: 647,623.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,397.40 : 1,995,887.70 = 431,686.20 : x
  2. Step 2: Convert to fraction form
    1,330,397.40/1,995,887.70 = 431,686.20/x
  3. Step 3: Cross multiply
    1,330,397.40x = 1,995,887.70 × 431,686.20
  4. Step 4: Simplify right side
    1,330,397.40x = 861,597,176,839.74
  5. Step 5: Solve for x
    x = 861,597,176,839.74/1,330,397.40
  6. Step 6: Final answer
    x = 647,623.92

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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.