Home / 1,420,279.68-1,959,955.59-775,702.47

Finding the Fourth Proportional to 1,420,279.68, 1,959,955.59 and 775,702.47

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Solution

The fourth proportional to 1,420,279.68, 1,959,955.59 and 775,702.47 is: 1,070,452.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,279.68 : 1,959,955.59 = 775,702.47 : x
  2. Step 2: Convert to fraction form
    1,420,279.68/1,959,955.59 = 775,702.47/x
  3. Step 3: Cross multiply
    1,420,279.68x = 1,959,955.59 × 775,702.47
  4. Step 4: Simplify right side
    1,420,279.68x = 1,520,342,392,253.31
  5. Step 5: Solve for x
    x = 1,520,342,392,253.31/1,420,279.68
  6. Step 6: Final answer
    x = 1,070,452.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.