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Finding the Fourth Proportional to 636,527.78, 878,390.81 and 350,047.86

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Solution

The fourth proportional to 636,527.78, 878,390.81 and 350,047.86 is: 483,056.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,527.78 : 878,390.81 = 350,047.86 : x
  2. Step 2: Convert to fraction form
    636,527.78/878,390.81 = 350,047.86/x
  3. Step 3: Cross multiply
    636,527.78x = 878,390.81 × 350,047.86
  4. Step 4: Simplify right side
    636,527.78x = 307,478,823,284.17
  5. Step 5: Solve for x
    x = 307,478,823,284.17/636,527.78
  6. Step 6: Final answer
    x = 483,056.41

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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.