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Finding the Fourth Proportional to 607,072.20, 910,608.30 and 447,639.90

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Solution

The fourth proportional to 607,072.20, 910,608.30 and 447,639.90 is: 671,459.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,072.20 : 910,608.30 = 447,639.90 : x
  2. Step 2: Convert to fraction form
    607,072.20/910,608.30 = 447,639.90/x
  3. Step 3: Cross multiply
    607,072.20x = 910,608.30 × 447,639.90
  4. Step 4: Simplify right side
    607,072.20x = 407,624,608,351.17
  5. Step 5: Solve for x
    x = 407,624,608,351.17/607,072.20
  6. Step 6: Final answer
    x = 671,459.85

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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.