Home / 991,878.90-1,368,806.49-539,179.62

Finding the Fourth Proportional to 991,878.90, 1,368,806.49 and 539,179.62

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Solution

The fourth proportional to 991,878.90, 1,368,806.49 and 539,179.62 is: 744,075.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,878.90 : 1,368,806.49 = 539,179.62 : x
  2. Step 2: Convert to fraction form
    991,878.90/1,368,806.49 = 539,179.62/x
  3. Step 3: Cross multiply
    991,878.90x = 1,368,806.49 × 539,179.62
  4. Step 4: Simplify right side
    991,878.90x = 738,032,563,131.73
  5. Step 5: Solve for x
    x = 738,032,563,131.73/991,878.90
  6. Step 6: Final answer
    x = 744,075.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.