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Finding the Fourth Proportional to 636,591.36, 878,495.76 and 350,130.72

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Solution

The fourth proportional to 636,591.36, 878,495.76 and 350,130.72 is: 483,180.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,591.36 : 878,495.76 = 350,130.72 : x
  2. Step 2: Convert to fraction form
    636,591.36/878,495.76 = 350,130.72/x
  3. Step 3: Cross multiply
    636,591.36x = 878,495.76 × 350,130.72
  4. Step 4: Simplify right side
    636,591.36x = 307,588,352,965.75
  5. Step 5: Solve for x
    x = 307,588,352,965.75/636,591.36
  6. Step 6: Final answer
    x = 483,180.22

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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.