Home / 890,989.46-1,333,291.59-771,458.78

Finding the Fourth Proportional to 890,989.46, 1,333,291.59 and 771,458.78

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Solution

The fourth proportional to 890,989.46, 1,333,291.59 and 771,458.78 is: 1,154,423.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,989.46 : 1,333,291.59 = 771,458.78 : x
  2. Step 2: Convert to fraction form
    890,989.46/1,333,291.59 = 771,458.78/x
  3. Step 3: Cross multiply
    890,989.46x = 1,333,291.59 × 771,458.78
  4. Step 4: Simplify right side
    890,989.46x = 1,028,579,503,405.66
  5. Step 5: Solve for x
    x = 1,028,579,503,405.66/890,989.46
  6. Step 6: Final answer
    x = 1,154,423.87

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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.