Home / 578,078.40-867,117.60-311,701.80

Finding the Fourth Proportional to 578,078.40, 867,117.60 and 311,701.80

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Solution

The fourth proportional to 578,078.40, 867,117.60 and 311,701.80 is: 467,552.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,078.40 : 867,117.60 = 311,701.80 : x
  2. Step 2: Convert to fraction form
    578,078.40/867,117.60 = 311,701.80/x
  3. Step 3: Cross multiply
    578,078.40x = 867,117.60 × 311,701.80
  4. Step 4: Simplify right side
    578,078.40x = 270,282,116,731.68
  5. Step 5: Solve for x
    x = 270,282,116,731.68/578,078.40
  6. Step 6: Final answer
    x = 467,552.70

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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.