Home / 1,389,974-1,918,151.16-786,362

Finding the Fourth Proportional to 1,389,974, 1,918,151.16 and 786,362

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Solution

The fourth proportional to 1,389,974, 1,918,151.16 and 786,362 is: 1,085,172.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,974 : 1,918,151.16 = 786,362 : x
  2. Step 2: Convert to fraction form
    1,389,974/1,918,151.16 = 786,362/x
  3. Step 3: Cross multiply
    1,389,974x = 1,918,151.16 × 786,362
  4. Step 4: Simplify right side
    1,389,974x = 1,508,361,182,479.92
  5. Step 5: Solve for x
    x = 1,508,361,182,479.92/1,389,974
  6. Step 6: Final answer
    x = 1,085,172.23

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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.