Home / 787,743.90-1,182,199.05-521,415.90

Finding the Fourth Proportional to 787,743.90, 1,182,199.05 and 521,415.90

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Solution

The fourth proportional to 787,743.90, 1,182,199.05 and 521,415.90 is: 782,509.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,743.90 : 1,182,199.05 = 521,415.90 : x
  2. Step 2: Convert to fraction form
    787,743.90/1,182,199.05 = 521,415.90/x
  3. Step 3: Cross multiply
    787,743.90x = 1,182,199.05 × 521,415.90
  4. Step 4: Simplify right side
    787,743.90x = 616,417,381,634.90
  5. Step 5: Solve for x
    x = 616,417,381,634.90/787,743.90
  6. Step 6: Final answer
    x = 782,509.88

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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.