Home / 1,488,780.78-2,233,392.59-690,143.05

Finding the Fourth Proportional to 1,488,780.78, 2,233,392.59 and 690,143.05

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Solution

The fourth proportional to 1,488,780.78, 2,233,392.59 and 690,143.05 is: 1,035,317.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,488,780.78 : 2,233,392.59 = 690,143.05 : x
  2. Step 2: Convert to fraction form
    1,488,780.78/2,233,392.59 = 690,143.05/x
  3. Step 3: Cross multiply
    1,488,780.78x = 2,233,392.59 × 690,143.05
  4. Step 4: Simplify right side
    1,488,780.78x = 1,541,360,373,910.00
  5. Step 5: Solve for x
    x = 1,541,360,373,910.00/1,488,780.78
  6. Step 6: Final answer
    x = 1,035,317.22

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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.