Home / 926,155.80-1,389,233.70-261,307.80

Finding the Fourth Proportional to 926,155.80, 1,389,233.70 and 261,307.80

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Solution

The fourth proportional to 926,155.80, 1,389,233.70 and 261,307.80 is: 391,961.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,155.80 : 1,389,233.70 = 261,307.80 : x
  2. Step 2: Convert to fraction form
    926,155.80/1,389,233.70 = 261,307.80/x
  3. Step 3: Cross multiply
    926,155.80x = 1,389,233.70 × 261,307.80
  4. Step 4: Simplify right side
    926,155.80x = 363,017,601,832.86
  5. Step 5: Solve for x
    x = 363,017,601,832.86/926,155.80
  6. Step 6: Final answer
    x = 391,961.70

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Similar ratio
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1.5x scale

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.