Home / 739,305.60-1,020,247.84-408,172.20

Finding the Fourth Proportional to 739,305.60, 1,020,247.84 and 408,172.20

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Solution

The fourth proportional to 739,305.60, 1,020,247.84 and 408,172.20 is: 563,281.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,305.60 : 1,020,247.84 = 408,172.20 : x
  2. Step 2: Convert to fraction form
    739,305.60/1,020,247.84 = 408,172.20/x
  3. Step 3: Cross multiply
    739,305.60x = 1,020,247.84 × 408,172.20
  4. Step 4: Simplify right side
    739,305.60x = 416,436,805,398.05
  5. Step 5: Solve for x
    x = 416,436,805,398.05/739,305.60
  6. Step 6: Final answer
    x = 563,281.01

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.