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Finding the Fourth Proportional to 666,306.84, 999,017.34 and 366,928.40

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Solution

The fourth proportional to 666,306.84, 999,017.34 and 366,928.40 is: 550,148.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,306.84 : 999,017.34 = 366,928.40 : x
  2. Step 2: Convert to fraction form
    666,306.84/999,017.34 = 366,928.40/x
  3. Step 3: Cross multiply
    666,306.84x = 999,017.34 × 366,928.40
  4. Step 4: Simplify right side
    666,306.84x = 366,567,834,138.46
  5. Step 5: Solve for x
    x = 366,567,834,138.46/666,306.84
  6. Step 6: Final answer
    x = 550,148.69

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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.