Home / 1,287,536-1,931,377.80-340,882.12

Finding the Fourth Proportional to 1,287,536, 1,931,377.80 and 340,882.12

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Solution

The fourth proportional to 1,287,536, 1,931,377.80 and 340,882.12 is: 511,342.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,536 : 1,931,377.80 = 340,882.12 : x
  2. Step 2: Convert to fraction form
    1,287,536/1,931,377.80 = 340,882.12/x
  3. Step 3: Cross multiply
    1,287,536x = 1,931,377.80 × 340,882.12
  4. Step 4: Simplify right side
    1,287,536x = 658,372,158,984.94
  5. Step 5: Solve for x
    x = 658,372,158,984.94/1,287,536
  6. Step 6: Final answer
    x = 511,342.72

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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.