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Finding the Fourth Proportional to 1,262,492.62, 1,741,085.95 and 986,886.88

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Solution

The fourth proportional to 1,262,492.62, 1,741,085.95 and 986,886.88 is: 1,361,001.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262,492.62 : 1,741,085.95 = 986,886.88 : x
  2. Step 2: Convert to fraction form
    1,262,492.62/1,741,085.95 = 986,886.88/x
  3. Step 3: Cross multiply
    1,262,492.62x = 1,741,085.95 × 986,886.88
  4. Step 4: Simplify right side
    1,262,492.62x = 1,718,254,881,007.34
  5. Step 5: Solve for x
    x = 1,718,254,881,007.34/1,262,492.62
  6. Step 6: Final answer
    x = 1,361,001.92

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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.