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Finding the Fourth Proportional to 579,420.20, 869,130.30 and 366,843.80

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Solution

The fourth proportional to 579,420.20, 869,130.30 and 366,843.80 is: 550,265.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,420.20 : 869,130.30 = 366,843.80 : x
  2. Step 2: Convert to fraction form
    579,420.20/869,130.30 = 366,843.80/x
  3. Step 3: Cross multiply
    579,420.20x = 869,130.30 × 366,843.80
  4. Step 4: Simplify right side
    579,420.20x = 318,835,061,947.14
  5. Step 5: Solve for x
    x = 318,835,061,947.14/579,420.20
  6. Step 6: Final answer
    x = 550,265.70

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Half scale
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Double scale
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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.