Home / 683,385.80-1,025,078.70-328,314.20

Finding the Fourth Proportional to 683,385.80, 1,025,078.70 and 328,314.20

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Solution

The fourth proportional to 683,385.80, 1,025,078.70 and 328,314.20 is: 492,471.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,385.80 : 1,025,078.70 = 328,314.20 : x
  2. Step 2: Convert to fraction form
    683,385.80/1,025,078.70 = 328,314.20/x
  3. Step 3: Cross multiply
    683,385.80x = 1,025,078.70 × 328,314.20
  4. Step 4: Simplify right side
    683,385.80x = 336,547,893,327.54
  5. Step 5: Solve for x
    x = 336,547,893,327.54/683,385.80
  6. Step 6: Final answer
    x = 492,471.30

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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.