Home / 738,454.80-1,107,682.20-620,356.80

Finding the Fourth Proportional to 738,454.80, 1,107,682.20 and 620,356.80

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Solution

The fourth proportional to 738,454.80, 1,107,682.20 and 620,356.80 is: 930,535.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,454.80 : 1,107,682.20 = 620,356.80 : x
  2. Step 2: Convert to fraction form
    738,454.80/1,107,682.20 = 620,356.80/x
  3. Step 3: Cross multiply
    738,454.80x = 1,107,682.20 × 620,356.80
  4. Step 4: Simplify right side
    738,454.80x = 687,158,185,008.96
  5. Step 5: Solve for x
    x = 687,158,185,008.96/738,454.80
  6. Step 6: Final answer
    x = 930,535.20

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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.