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Finding the Fourth Proportional to 567,516.99, 783,178.80 and 312,877.29

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Solution

The fourth proportional to 567,516.99, 783,178.80 and 312,877.29 is: 431,773.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,516.99 : 783,178.80 = 312,877.29 : x
  2. Step 2: Convert to fraction form
    567,516.99/783,178.80 = 312,877.29/x
  3. Step 3: Cross multiply
    567,516.99x = 783,178.80 × 312,877.29
  4. Step 4: Simplify right side
    567,516.99x = 245,038,860,529.45
  5. Step 5: Solve for x
    x = 245,038,860,529.45/567,516.99
  6. Step 6: Final answer
    x = 431,773.61

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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.