Home / 1,208,187.20-1,812,223.20-409,390.40

Finding the Fourth Proportional to 1,208,187.20, 1,812,223.20 and 409,390.40

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Solution

The fourth proportional to 1,208,187.20, 1,812,223.20 and 409,390.40 is: 614,066.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,187.20 : 1,812,223.20 = 409,390.40 : x
  2. Step 2: Convert to fraction form
    1,208,187.20/1,812,223.20 = 409,390.40/x
  3. Step 3: Cross multiply
    1,208,187.20x = 1,812,223.20 × 409,390.40
  4. Step 4: Simplify right side
    1,208,187.20x = 741,906,780,737.28
  5. Step 5: Solve for x
    x = 741,906,780,737.28/1,208,187.20
  6. Step 6: Final answer
    x = 614,066.08

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Double scale
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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.