Home / 724,986.40-1,087,868.40-304,304.80

Finding the Fourth Proportional to 724,986.40, 1,087,868.40 and 304,304.80

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Solution

The fourth proportional to 724,986.40, 1,087,868.40 and 304,304.80 is: 456,620.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,986.40 : 1,087,868.40 = 304,304.80 : x
  2. Step 2: Convert to fraction form
    724,986.40/1,087,868.40 = 304,304.80/x
  3. Step 3: Cross multiply
    724,986.40x = 1,087,868.40 × 304,304.80
  4. Step 4: Simplify right side
    724,986.40x = 331,043,575,888.32
  5. Step 5: Solve for x
    x = 331,043,575,888.32/724,986.40
  6. Step 6: Final answer
    x = 456,620.39

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1.5x scale

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.