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Finding the Fourth Proportional to 679,129.39, 936,808.26 and 424,037.71

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Solution

The fourth proportional to 679,129.39, 936,808.26 and 424,037.71 is: 584,928.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,129.39 : 936,808.26 = 424,037.71 : x
  2. Step 2: Convert to fraction form
    679,129.39/936,808.26 = 424,037.71/x
  3. Step 3: Cross multiply
    679,129.39x = 936,808.26 × 424,037.71
  4. Step 4: Simplify right side
    679,129.39x = 397,242,024,595.44
  5. Step 5: Solve for x
    x = 397,242,024,595.44/679,129.39
  6. Step 6: Final answer
    x = 584,928.34

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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.