Home / 811,839.98-1,217,734.77-385,682.48

Finding the Fourth Proportional to 811,839.98, 1,217,734.77 and 385,682.48

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Solution

The fourth proportional to 811,839.98, 1,217,734.77 and 385,682.48 is: 578,511.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,839.98 : 1,217,734.77 = 385,682.48 : x
  2. Step 2: Convert to fraction form
    811,839.98/1,217,734.77 = 385,682.48/x
  3. Step 3: Cross multiply
    811,839.98x = 1,217,734.77 × 385,682.48
  4. Step 4: Simplify right side
    811,839.98x = 469,658,966,075.83
  5. Step 5: Solve for x
    x = 469,658,966,075.83/811,839.98
  6. Step 6: Final answer
    x = 578,511.75

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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.