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Finding the Fourth Proportional to 861,801.84, 1,290,272.40 and 456,075

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Solution

The fourth proportional to 861,801.84, 1,290,272.40 and 456,075 is: 682,826.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,801.84 : 1,290,272.40 = 456,075 : x
  2. Step 2: Convert to fraction form
    861,801.84/1,290,272.40 = 456,075/x
  3. Step 3: Cross multiply
    861,801.84x = 1,290,272.40 × 456,075
  4. Step 4: Simplify right side
    861,801.84x = 588,460,984,830
  5. Step 5: Solve for x
    x = 588,460,984,830/861,801.84
  6. Step 6: Final answer
    x = 682,826.33

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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.