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Finding the Fourth Proportional to 885,892.20, 1,328,838.30 and 880,643.40

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Solution

The fourth proportional to 885,892.20, 1,328,838.30 and 880,643.40 is: 1,320,965.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,892.20 : 1,328,838.30 = 880,643.40 : x
  2. Step 2: Convert to fraction form
    885,892.20/1,328,838.30 = 880,643.40/x
  3. Step 3: Cross multiply
    885,892.20x = 1,328,838.30 × 880,643.40
  4. Step 4: Simplify right side
    885,892.20x = 1,170,232,678,562.22
  5. Step 5: Solve for x
    x = 1,170,232,678,562.22/885,892.20
  6. Step 6: Final answer
    x = 1,320,965.10

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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.