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Finding the Fourth Proportional to 636,707.46, 878,637.78 and 350,227.48

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Solution

The fourth proportional to 636,707.46, 878,637.78 and 350,227.48 is: 483,303.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,707.46 : 878,637.78 = 350,227.48 : x
  2. Step 2: Convert to fraction form
    636,707.46/878,637.78 = 350,227.48/x
  3. Step 3: Cross multiply
    636,707.46x = 878,637.78 × 350,227.48
  4. Step 4: Simplify right side
    636,707.46x = 307,723,095,522.19
  5. Step 5: Solve for x
    x = 307,723,095,522.19/636,707.46
  6. Step 6: Final answer
    x = 483,303.74

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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.