Home / 738,679.12-1,019,458.18-428,650

Finding the Fourth Proportional to 738,679.12, 1,019,458.18 and 428,650

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Solution

The fourth proportional to 738,679.12, 1,019,458.18 and 428,650 is: 591,584.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,679.12 : 1,019,458.18 = 428,650 : x
  2. Step 2: Convert to fraction form
    738,679.12/1,019,458.18 = 428,650/x
  3. Step 3: Cross multiply
    738,679.12x = 1,019,458.18 × 428,650
  4. Step 4: Simplify right side
    738,679.12x = 436,990,748,857
  5. Step 5: Solve for x
    x = 436,990,748,857/738,679.12
  6. Step 6: Final answer
    x = 591,584.00

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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.