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Finding the Fourth Proportional to 579,433.80, 869,150.70 and 376,480.20

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Solution

The fourth proportional to 579,433.80, 869,150.70 and 376,480.20 is: 564,720.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,433.80 : 869,150.70 = 376,480.20 : x
  2. Step 2: Convert to fraction form
    579,433.80/869,150.70 = 376,480.20/x
  3. Step 3: Cross multiply
    579,433.80x = 869,150.70 × 376,480.20
  4. Step 4: Simplify right side
    579,433.80x = 327,218,029,366.14
  5. Step 5: Solve for x
    x = 327,218,029,366.14/579,433.80
  6. Step 6: Final answer
    x = 564,720.30

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Double scale
Find fourth proportional to 579,434.80, 869,152.20 and 376,481.20
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.