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Finding the Fourth Proportional to 567,420.91, 783,040.67 and 312,776.35

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Solution

The fourth proportional to 567,420.91, 783,040.67 and 312,776.35 is: 431,631.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,420.91 : 783,040.67 = 312,776.35 : x
  2. Step 2: Convert to fraction form
    567,420.91/783,040.67 = 312,776.35/x
  3. Step 3: Cross multiply
    567,420.91x = 783,040.67 × 312,776.35
  4. Step 4: Simplify right side
    567,420.91x = 244,916,601,100.27
  5. Step 5: Solve for x
    x = 244,916,601,100.27/567,420.91
  6. Step 6: Final answer
    x = 431,631.26

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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.