Home / 890,987.46-1,333,288.59-771,456.78

Finding the Fourth Proportional to 890,987.46, 1,333,288.59 and 771,456.78

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Solution

The fourth proportional to 890,987.46, 1,333,288.59 and 771,456.78 is: 1,154,420.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,987.46 : 1,333,288.59 = 771,456.78 : x
  2. Step 2: Convert to fraction form
    890,987.46/1,333,288.59 = 771,456.78/x
  3. Step 3: Cross multiply
    890,987.46x = 1,333,288.59 × 771,456.78
  4. Step 4: Simplify right side
    890,987.46x = 1,028,574,522,452.14
  5. Step 5: Solve for x
    x = 1,028,574,522,452.14/890,987.46
  6. Step 6: Final answer
    x = 1,154,420.87

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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.