Home / 649,382.10-895,567.04-407,687.20

Finding the Fourth Proportional to 649,382.10, 895,567.04 and 407,687.20

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Solution

The fourth proportional to 649,382.10, 895,567.04 and 407,687.20 is: 562,244.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,382.10 : 895,567.04 = 407,687.20 : x
  2. Step 2: Convert to fraction form
    649,382.10/895,567.04 = 407,687.20/x
  3. Step 3: Cross multiply
    649,382.10x = 895,567.04 × 407,687.20
  4. Step 4: Simplify right side
    649,382.10x = 365,111,218,949.89
  5. Step 5: Solve for x
    x = 365,111,218,949.89/649,382.10
  6. Step 6: Final answer
    x = 562,244.05

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.