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Finding the Fourth Proportional to 485,909.04, 670,612.96 and 284,705.04

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Solution

The fourth proportional to 485,909.04, 670,612.96 and 284,705.04 is: 392,927.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,909.04 : 670,612.96 = 284,705.04 : x
  2. Step 2: Convert to fraction form
    485,909.04/670,612.96 = 284,705.04/x
  3. Step 3: Cross multiply
    485,909.04x = 670,612.96 × 284,705.04
  4. Step 4: Simplify right side
    485,909.04x = 190,926,889,601.32
  5. Step 5: Solve for x
    x = 190,926,889,601.32/485,909.04
  6. Step 6: Final answer
    x = 392,927.22

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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.