Home / 778,840.70-1,168,589.10-424,109.30

Finding the Fourth Proportional to 778,840.70, 1,168,589.10 and 424,109.30

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Solution

The fourth proportional to 778,840.70, 1,168,589.10 and 424,109.30 is: 636,342.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,840.70 : 1,168,589.10 = 424,109.30 : x
  2. Step 2: Convert to fraction form
    778,840.70/1,168,589.10 = 424,109.30/x
  3. Step 3: Cross multiply
    778,840.70x = 1,168,589.10 × 424,109.30
  4. Step 4: Simplify right side
    778,840.70x = 495,609,505,188.63
  5. Step 5: Solve for x
    x = 495,609,505,188.63/778,840.70
  6. Step 6: Final answer
    x = 636,342.59

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Double scale
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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.