Home / 1,112,534.60-1,668,801.90-687,381.80

Finding the Fourth Proportional to 1,112,534.60, 1,668,801.90 and 687,381.80

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Solution

The fourth proportional to 1,112,534.60, 1,668,801.90 and 687,381.80 is: 1,031,072.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112,534.60 : 1,668,801.90 = 687,381.80 : x
  2. Step 2: Convert to fraction form
    1,112,534.60/1,668,801.90 = 687,381.80/x
  3. Step 3: Cross multiply
    1,112,534.60x = 1,668,801.90 × 687,381.80
  4. Step 4: Simplify right side
    1,112,534.60x = 1,147,104,053,865.42
  5. Step 5: Solve for x
    x = 1,147,104,053,865.42/1,112,534.60
  6. Step 6: Final answer
    x = 1,031,072.70

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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.