Home / 1,290,662.79-1,781,157.92-709,910.48

Finding the Fourth Proportional to 1,290,662.79, 1,781,157.92 and 709,910.48

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Solution

The fourth proportional to 1,290,662.79, 1,781,157.92 and 709,910.48 is: 979,700.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,662.79 : 1,781,157.92 = 709,910.48 : x
  2. Step 2: Convert to fraction form
    1,290,662.79/1,781,157.92 = 709,910.48/x
  3. Step 3: Cross multiply
    1,290,662.79x = 1,781,157.92 × 709,910.48
  4. Step 4: Simplify right side
    1,290,662.79x = 1,264,462,661,487.66
  5. Step 5: Solve for x
    x = 1,264,462,661,487.66/1,290,662.79
  6. Step 6: Final answer
    x = 979,700.25

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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.