Home / 810,545.10-1,215,818.61-211,505.82

Finding the Fourth Proportional to 810,545.10, 1,215,818.61 and 211,505.82

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Solution

The fourth proportional to 810,545.10, 1,215,818.61 and 211,505.82 is: 317,258.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,545.10 : 1,215,818.61 = 211,505.82 : x
  2. Step 2: Convert to fraction form
    810,545.10/1,215,818.61 = 211,505.82/x
  3. Step 3: Cross multiply
    810,545.10x = 1,215,818.61 × 211,505.82
  4. Step 4: Simplify right side
    810,545.10x = 257,152,712,079.31
  5. Step 5: Solve for x
    x = 257,152,712,079.31/810,545.10
  6. Step 6: Final answer
    x = 317,258.98

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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.