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Finding the Fourth Proportional to 1,208,582.80, 1,810,905.90 and 889,718.20

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Solution

The fourth proportional to 1,208,582.80, 1,810,905.90 and 889,718.20 is: 1,333,128.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,582.80 : 1,810,905.90 = 889,718.20 : x
  2. Step 2: Convert to fraction form
    1,208,582.80/1,810,905.90 = 889,718.20/x
  3. Step 3: Cross multiply
    1,208,582.80x = 1,810,905.90 × 889,718.20
  4. Step 4: Simplify right side
    1,208,582.80x = 1,611,195,937,717.38
  5. Step 5: Solve for x
    x = 1,611,195,937,717.38/1,208,582.80
  6. Step 6: Final answer
    x = 1,333,128.30

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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.