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Finding the Fourth Proportional to 636,703.96, 878,632.94 and 350,223.98

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Solution

The fourth proportional to 636,703.96, 878,632.94 and 350,223.98 is: 483,298.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,703.96 : 878,632.94 = 350,223.98 : x
  2. Step 2: Convert to fraction form
    636,703.96/878,632.94 = 350,223.98/x
  3. Step 3: Cross multiply
    636,703.96x = 878,632.94 × 350,223.98
  4. Step 4: Simplify right side
    636,703.96x = 307,718,325,205.90
  5. Step 5: Solve for x
    x = 307,718,325,205.90/636,703.96
  6. Step 6: Final answer
    x = 483,298.90

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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.