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Finding the Fourth Proportional to 666,701.60, 1,000,052.40 and 489,554.60

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Solution

The fourth proportional to 666,701.60, 1,000,052.40 and 489,554.60 is: 734,331.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,701.60 : 1,000,052.40 = 489,554.60 : x
  2. Step 2: Convert to fraction form
    666,701.60/1,000,052.40 = 489,554.60/x
  3. Step 3: Cross multiply
    666,701.60x = 1,000,052.40 × 489,554.60
  4. Step 4: Simplify right side
    666,701.60x = 489,580,252,661.04
  5. Step 5: Solve for x
    x = 489,580,252,661.04/666,701.60
  6. Step 6: Final answer
    x = 734,331.90

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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.