Home / 1,389,699.57-2,084,908.75-813,809.20

Finding the Fourth Proportional to 1,389,699.57, 2,084,908.75 and 813,809.20

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Solution

The fourth proportional to 1,389,699.57, 2,084,908.75 and 813,809.20 is: 1,220,924.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,699.57 : 2,084,908.75 = 813,809.20 : x
  2. Step 2: Convert to fraction form
    1,389,699.57/2,084,908.75 = 813,809.20/x
  3. Step 3: Cross multiply
    1,389,699.57x = 2,084,908.75 × 813,809.20
  4. Step 4: Simplify right side
    1,389,699.57x = 1,696,717,921,910.50
  5. Step 5: Solve for x
    x = 1,696,717,921,910.50/1,389,699.57
  6. Step 6: Final answer
    x = 1,220,924.26

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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.