Home / 772,921.20-1,159,900.20-457,042.80

Finding the Fourth Proportional to 772,921.20, 1,159,900.20 and 457,042.80

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Solution

The fourth proportional to 772,921.20, 1,159,900.20 and 457,042.80 is: 685,870.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,921.20 : 1,159,900.20 = 457,042.80 : x
  2. Step 2: Convert to fraction form
    772,921.20/1,159,900.20 = 457,042.80/x
  3. Step 3: Cross multiply
    772,921.20x = 1,159,900.20 × 457,042.80
  4. Step 4: Simplify right side
    772,921.20x = 530,124,035,128.56
  5. Step 5: Solve for x
    x = 530,124,035,128.56/772,921.20
  6. Step 6: Final answer
    x = 685,870.74

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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.