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Finding the Fourth Proportional to 890,306.64, 1,336,794 and 770,732.40

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Solution

The fourth proportional to 890,306.64, 1,336,794 and 770,732.40 is: 1,157,253.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,306.64 : 1,336,794 = 770,732.40 : x
  2. Step 2: Convert to fraction form
    890,306.64/1,336,794 = 770,732.40/x
  3. Step 3: Cross multiply
    890,306.64x = 1,336,794 × 770,732.40
  4. Step 4: Simplify right side
    890,306.64x = 1,030,310,447,925.60
  5. Step 5: Solve for x
    x = 1,030,310,447,925.60/890,306.64
  6. Step 6: Final answer
    x = 1,157,253.47

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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.