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Finding the Fourth Proportional to 636,609, 878,527.70 and 350,133.80

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Solution

The fourth proportional to 636,609, 878,527.70 and 350,133.80 is: 483,188.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,609 : 878,527.70 = 350,133.80 : x
  2. Step 2: Convert to fraction form
    636,609/878,527.70 = 350,133.80/x
  3. Step 3: Cross multiply
    636,609x = 878,527.70 × 350,133.80
  4. Step 4: Simplify right side
    636,609x = 307,602,242,006.26
  5. Step 5: Solve for x
    x = 307,602,242,006.26/636,609
  6. Step 6: Final answer
    x = 483,188.65

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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.