Home / 779,135.25-1,075,272.30-439,669.11

Finding the Fourth Proportional to 779,135.25, 1,075,272.30 and 439,669.11

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Solution

The fourth proportional to 779,135.25, 1,075,272.30 and 439,669.11 is: 606,780.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,135.25 : 1,075,272.30 = 439,669.11 : x
  2. Step 2: Convert to fraction form
    779,135.25/1,075,272.30 = 439,669.11/x
  3. Step 3: Cross multiply
    779,135.25x = 1,075,272.30 × 439,669.11
  4. Step 4: Simplify right side
    779,135.25x = 472,764,015,148.65
  5. Step 5: Solve for x
    x = 472,764,015,148.65/779,135.25
  6. Step 6: Final answer
    x = 606,780.42

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1.5x scale

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.