Home / 683,411.80-1,025,117.70-328,340.20

Finding the Fourth Proportional to 683,411.80, 1,025,117.70 and 328,340.20

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Solution

The fourth proportional to 683,411.80, 1,025,117.70 and 328,340.20 is: 492,510.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,411.80 : 1,025,117.70 = 328,340.20 : x
  2. Step 2: Convert to fraction form
    683,411.80/1,025,117.70 = 328,340.20/x
  3. Step 3: Cross multiply
    683,411.80x = 1,025,117.70 × 328,340.20
  4. Step 4: Simplify right side
    683,411.80x = 336,587,350,641.54
  5. Step 5: Solve for x
    x = 336,587,350,641.54/683,411.80
  6. Step 6: Final answer
    x = 492,510.30

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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.