Home / 1,276,306.80-1,913,999.40-645,010.80

Finding the Fourth Proportional to 1,276,306.80, 1,913,999.40 and 645,010.80

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Solution

The fourth proportional to 1,276,306.80, 1,913,999.40 and 645,010.80 is: 967,283.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,306.80 : 1,913,999.40 = 645,010.80 : x
  2. Step 2: Convert to fraction form
    1,276,306.80/1,913,999.40 = 645,010.80/x
  3. Step 3: Cross multiply
    1,276,306.80x = 1,913,999.40 × 645,010.80
  4. Step 4: Simplify right side
    1,276,306.80x = 1,234,550,284,193.52
  5. Step 5: Solve for x
    x = 1,234,550,284,193.52/1,276,306.80
  6. Step 6: Final answer
    x = 967,283.32

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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.