Home / 1,330,369.35-1,996,046.10-431,840.40

Finding the Fourth Proportional to 1,330,369.35, 1,996,046.10 and 431,840.40

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Solution

The fourth proportional to 1,330,369.35, 1,996,046.10 and 431,840.40 is: 647,920.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,369.35 : 1,996,046.10 = 431,840.40 : x
  2. Step 2: Convert to fraction form
    1,330,369.35/1,996,046.10 = 431,840.40/x
  3. Step 3: Cross multiply
    1,330,369.35x = 1,996,046.10 × 431,840.40
  4. Step 4: Simplify right side
    1,330,369.35x = 861,973,346,242.44
  5. Step 5: Solve for x
    x = 861,973,346,242.44/1,330,369.35
  6. Step 6: Final answer
    x = 647,920.33

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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.