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Finding the Fourth Proportional to 764,807.80, 1,147,211.70 and 484,641.40

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Solution

The fourth proportional to 764,807.80, 1,147,211.70 and 484,641.40 is: 726,962.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,807.80 : 1,147,211.70 = 484,641.40 : x
  2. Step 2: Convert to fraction form
    764,807.80/1,147,211.70 = 484,641.40/x
  3. Step 3: Cross multiply
    764,807.80x = 1,147,211.70 × 484,641.40
  4. Step 4: Simplify right side
    764,807.80x = 555,986,284,384.38
  5. Step 5: Solve for x
    x = 555,986,284,384.38/764,807.80
  6. Step 6: Final answer
    x = 726,962.10

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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.