Home / 1,389,699.56-2,084,908.74-813,809.19

Finding the Fourth Proportional to 1,389,699.56, 2,084,908.74 and 813,809.19

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Solution

The fourth proportional to 1,389,699.56, 2,084,908.74 and 813,809.19 is: 1,220,924.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,699.56 : 2,084,908.74 = 813,809.19 : x
  2. Step 2: Convert to fraction form
    1,389,699.56/2,084,908.74 = 813,809.19/x
  3. Step 3: Cross multiply
    1,389,699.56x = 2,084,908.74 × 813,809.19
  4. Step 4: Simplify right side
    1,389,699.56x = 1,696,717,888,854.27
  5. Step 5: Solve for x
    x = 1,696,717,888,854.27/1,389,699.56
  6. Step 6: Final answer
    x = 1,220,924.25

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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.