Home / 913,105.12-1,369,844.48-313,988.47

Finding the Fourth Proportional to 913,105.12, 1,369,844.48 and 313,988.47

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Solution

The fourth proportional to 913,105.12, 1,369,844.48 and 313,988.47 is: 471,046.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,105.12 : 1,369,844.48 = 313,988.47 : x
  2. Step 2: Convert to fraction form
    913,105.12/1,369,844.48 = 313,988.47/x
  3. Step 3: Cross multiply
    913,105.12x = 1,369,844.48 × 313,988.47
  4. Step 4: Simplify right side
    913,105.12x = 430,115,366,348.89
  5. Step 5: Solve for x
    x = 430,115,366,348.89/913,105.12
  6. Step 6: Final answer
    x = 471,046.94

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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.