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Finding the Fourth Proportional to 890,303.11, 1,336,788.74 and 770,728.89

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Solution

The fourth proportional to 890,303.11, 1,336,788.74 and 770,728.89 is: 1,157,248.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,303.11 : 1,336,788.74 = 770,728.89 : x
  2. Step 2: Convert to fraction form
    890,303.11/1,336,788.74 = 770,728.89/x
  3. Step 3: Cross multiply
    890,303.11x = 1,336,788.74 × 770,728.89
  4. Step 4: Simplify right side
    890,303.11x = 1,030,301,701,744.70
  5. Step 5: Solve for x
    x = 1,030,301,701,744.70/890,303.11
  6. Step 6: Final answer
    x = 1,157,248.23

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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.