Home / 1,290,242.56-1,780,595.46-717,292.28

Finding the Fourth Proportional to 1,290,242.56, 1,780,595.46 and 717,292.28

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Solution

The fourth proportional to 1,290,242.56, 1,780,595.46 and 717,292.28 is: 989,897.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,242.56 : 1,780,595.46 = 717,292.28 : x
  2. Step 2: Convert to fraction form
    1,290,242.56/1,780,595.46 = 717,292.28/x
  3. Step 3: Cross multiply
    1,290,242.56x = 1,780,595.46 × 717,292.28
  4. Step 4: Simplify right side
    1,290,242.56x = 1,277,207,377,261.05
  5. Step 5: Solve for x
    x = 1,277,207,377,261.05/1,290,242.56
  6. Step 6: Final answer
    x = 989,897.11

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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.