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Finding the Fourth Proportional to 1,660,512, 2,490,768 and 538,581

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Solution

The fourth proportional to 1,660,512, 2,490,768 and 538,581 is: 807,871.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,660,512 : 2,490,768 = 538,581 : x
  2. Step 2: Convert to fraction form
    1,660,512/2,490,768 = 538,581/x
  3. Step 3: Cross multiply
    1,660,512x = 2,490,768 × 538,581
  4. Step 4: Simplify right side
    1,660,512x = 1,341,480,320,208
  5. Step 5: Solve for x
    x = 1,341,480,320,208/1,660,512
  6. Step 6: Final answer
    x = 807,871.50

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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.