Home / 1,331,981.09-1,838,096.57-728,356.13

Finding the Fourth Proportional to 1,331,981.09, 1,838,096.57 and 728,356.13

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Solution

The fourth proportional to 1,331,981.09, 1,838,096.57 and 728,356.13 is: 1,005,111.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331,981.09 : 1,838,096.57 = 728,356.13 : x
  2. Step 2: Convert to fraction form
    1,331,981.09/1,838,096.57 = 728,356.13/x
  3. Step 3: Cross multiply
    1,331,981.09x = 1,838,096.57 × 728,356.13
  4. Step 4: Simplify right side
    1,331,981.09x = 1,338,788,895,100.99
  5. Step 5: Solve for x
    x = 1,338,788,895,100.99/1,331,981.09
  6. Step 6: Final answer
    x = 1,005,111.04

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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.