Home / 1,290,625.89-1,781,106.87-709,873.50

Finding the Fourth Proportional to 1,290,625.89, 1,781,106.87 and 709,873.50

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Solution

The fourth proportional to 1,290,625.89, 1,781,106.87 and 709,873.50 is: 979,649.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,625.89 : 1,781,106.87 = 709,873.50 : x
  2. Step 2: Convert to fraction form
    1,290,625.89/1,781,106.87 = 709,873.50/x
  3. Step 3: Cross multiply
    1,290,625.89x = 1,781,106.87 × 709,873.50
  4. Step 4: Simplify right side
    1,290,625.89x = 1,264,360,577,022.12
  5. Step 5: Solve for x
    x = 1,264,360,577,022.12/1,290,625.89
  6. Step 6: Final answer
    x = 979,649.17

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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.