Home / 1,290,223.02-1,780,568.52-717,272.76

Finding the Fourth Proportional to 1,290,223.02, 1,780,568.52 and 717,272.76

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Solution

The fourth proportional to 1,290,223.02, 1,780,568.52 and 717,272.76 is: 989,870.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,223.02 : 1,780,568.52 = 717,272.76 : x
  2. Step 2: Convert to fraction form
    1,290,223.02/1,780,568.52 = 717,272.76/x
  3. Step 3: Cross multiply
    1,290,223.02x = 1,780,568.52 × 717,272.76
  4. Step 4: Simplify right side
    1,290,223.02x = 1,277,153,296,709.52
  5. Step 5: Solve for x
    x = 1,277,153,296,709.52/1,290,223.02
  6. Step 6: Final answer
    x = 989,870.18

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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.