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Finding the Fourth Proportional to 636,592.34, 878,504.75 and 350,117.21

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Solution

The fourth proportional to 636,592.34, 878,504.75 and 350,117.21 is: 483,165.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,592.34 : 878,504.75 = 350,117.21 : x
  2. Step 2: Convert to fraction form
    636,592.34/878,504.75 = 350,117.21/x
  3. Step 3: Cross multiply
    636,592.34x = 878,504.75 × 350,117.21
  4. Step 4: Simplify right side
    636,592.34x = 307,579,627,211.58
  5. Step 5: Solve for x
    x = 307,579,627,211.58/636,592.34
  6. Step 6: Final answer
    x = 483,165.77

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1.5x scale

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.