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Finding the Fourth Proportional to 977,758.80, 1,466,200.80 and 378,520.80

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Solution

The fourth proportional to 977,758.80, 1,466,200.80 and 378,520.80 is: 567,611.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,758.80 : 1,466,200.80 = 378,520.80 : x
  2. Step 2: Convert to fraction form
    977,758.80/1,466,200.80 = 378,520.80/x
  3. Step 3: Cross multiply
    977,758.80x = 1,466,200.80 × 378,520.80
  4. Step 4: Simplify right side
    977,758.80x = 554,987,499,776.64
  5. Step 5: Solve for x
    x = 554,987,499,776.64/977,758.80
  6. Step 6: Final answer
    x = 567,611.87

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Double scale
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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.