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Finding the Fourth Proportional to 885,848, 1,329,707.20 and 412,989.44

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Solution

The fourth proportional to 885,848, 1,329,707.20 and 412,989.44 is: 619,920.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,848 : 1,329,707.20 = 412,989.44 : x
  2. Step 2: Convert to fraction form
    885,848/1,329,707.20 = 412,989.44/x
  3. Step 3: Cross multiply
    885,848x = 1,329,707.20 × 412,989.44
  4. Step 4: Simplify right side
    885,848x = 549,155,031,891.97
  5. Step 5: Solve for x
    x = 549,155,031,891.97/885,848
  6. Step 6: Final answer
    x = 619,920.16

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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.