Home / 709,702.85-979,377.29-403,772.65

Finding the Fourth Proportional to 709,702.85, 979,377.29 and 403,772.65

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Solution

The fourth proportional to 709,702.85, 979,377.29 and 403,772.65 is: 557,199.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,702.85 : 979,377.29 = 403,772.65 : x
  2. Step 2: Convert to fraction form
    709,702.85/979,377.29 = 403,772.65/x
  3. Step 3: Cross multiply
    709,702.85x = 979,377.29 × 403,772.65
  4. Step 4: Simplify right side
    709,702.85x = 395,445,761,347.77
  5. Step 5: Solve for x
    x = 395,445,761,347.77/709,702.85
  6. Step 6: Final answer
    x = 557,199.06

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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.