Home / 864,005.85-1,296,008.78-528,082.65

Finding the Fourth Proportional to 864,005.85, 1,296,008.78 and 528,082.65

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Solution

The fourth proportional to 864,005.85, 1,296,008.78 and 528,082.65 is: 792,123.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,005.85 : 1,296,008.78 = 528,082.65 : x
  2. Step 2: Convert to fraction form
    864,005.85/1,296,008.78 = 528,082.65/x
  3. Step 3: Cross multiply
    864,005.85x = 1,296,008.78 × 528,082.65
  4. Step 4: Simplify right side
    864,005.85x = 684,399,750,965.67
  5. Step 5: Solve for x
    x = 684,399,750,965.67/864,005.85
  6. Step 6: Final answer
    x = 792,123.98

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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.