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Finding the Fourth Proportional to 636,688.27, 878,611.48 and 350,208.35

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Solution

The fourth proportional to 636,688.27, 878,611.48 and 350,208.35 is: 483,277.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,688.27 : 878,611.48 = 350,208.35 : x
  2. Step 2: Convert to fraction form
    636,688.27/878,611.48 = 350,208.35/x
  3. Step 3: Cross multiply
    636,688.27x = 878,611.48 × 350,208.35
  4. Step 4: Simplify right side
    636,688.27x = 307,697,076,701.86
  5. Step 5: Solve for x
    x = 307,697,076,701.86/636,688.27
  6. Step 6: Final answer
    x = 483,277.44

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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.