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Finding the Fourth Proportional to 444,013.40, 666,068.70 and 430,016.60

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Solution

The fourth proportional to 444,013.40, 666,068.70 and 430,016.60 is: 645,071.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,013.40 : 666,068.70 = 430,016.60 : x
  2. Step 2: Convert to fraction form
    444,013.40/666,068.70 = 430,016.60/x
  3. Step 3: Cross multiply
    444,013.40x = 666,068.70 × 430,016.60
  4. Step 4: Simplify right side
    444,013.40x = 286,420,597,740.42
  5. Step 5: Solve for x
    x = 286,420,597,740.42/444,013.40
  6. Step 6: Final answer
    x = 645,071.97

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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.