Home / 879,220.92-1,318,542.20-310,498.86

Finding the Fourth Proportional to 879,220.92, 1,318,542.20 and 310,498.86

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Solution

The fourth proportional to 879,220.92, 1,318,542.20 and 310,498.86 is: 465,646.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,220.92 : 1,318,542.20 = 310,498.86 : x
  2. Step 2: Convert to fraction form
    879,220.92/1,318,542.20 = 310,498.86/x
  3. Step 3: Cross multiply
    879,220.92x = 1,318,542.20 × 310,498.86
  4. Step 4: Simplify right side
    879,220.92x = 409,405,849,961.89
  5. Step 5: Solve for x
    x = 409,405,849,961.89/879,220.92
  6. Step 6: Final answer
    x = 465,646.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.