Home / 1,287,537.76-1,931,380.40-340,883.84

Finding the Fourth Proportional to 1,287,537.76, 1,931,380.40 and 340,883.84

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Solution

The fourth proportional to 1,287,537.76, 1,931,380.40 and 340,883.84 is: 511,345.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,537.76 : 1,931,380.40 = 340,883.84 : x
  2. Step 2: Convert to fraction form
    1,287,537.76/1,931,380.40 = 340,883.84/x
  3. Step 3: Cross multiply
    1,287,537.76x = 1,931,380.40 × 340,883.84
  4. Step 4: Simplify right side
    1,287,537.76x = 658,376,367,252.74
  5. Step 5: Solve for x
    x = 658,376,367,252.74/1,287,537.76
  6. Step 6: Final answer
    x = 511,345.29

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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.