Home / 1,127,040-1,690,658.40-285,591.78

Finding the Fourth Proportional to 1,127,040, 1,690,658.40 and 285,591.78

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Solution

The fourth proportional to 1,127,040, 1,690,658.40 and 285,591.78 is: 428,412.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127,040 : 1,690,658.40 = 285,591.78 : x
  2. Step 2: Convert to fraction form
    1,127,040/1,690,658.40 = 285,591.78/x
  3. Step 3: Cross multiply
    1,127,040x = 1,690,658.40 × 285,591.78
  4. Step 4: Simplify right side
    1,127,040x = 482,838,141,827.95
  5. Step 5: Solve for x
    x = 482,838,141,827.95/1,127,040
  6. Step 6: Final answer
    x = 428,412.60

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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.