Home / 1,387,084.50-2,080,626.75-389,812.50

Finding the Fourth Proportional to 1,387,084.50, 2,080,626.75 and 389,812.50

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Solution

The fourth proportional to 1,387,084.50, 2,080,626.75 and 389,812.50 is: 584,718.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,084.50 : 2,080,626.75 = 389,812.50 : x
  2. Step 2: Convert to fraction form
    1,387,084.50/2,080,626.75 = 389,812.50/x
  3. Step 3: Cross multiply
    1,387,084.50x = 2,080,626.75 × 389,812.50
  4. Step 4: Simplify right side
    1,387,084.50x = 811,054,314,984.38
  5. Step 5: Solve for x
    x = 811,054,314,984.38/1,387,084.50
  6. Step 6: Final answer
    x = 584,718.75

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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.