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Finding the Fourth Proportional to 567,399.66, 783,015.30 and 312,751.08

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Solution

The fourth proportional to 567,399.66, 783,015.30 and 312,751.08 is: 431,598.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,399.66 : 783,015.30 = 312,751.08 : x
  2. Step 2: Convert to fraction form
    567,399.66/783,015.30 = 312,751.08/x
  3. Step 3: Cross multiply
    567,399.66x = 783,015.30 × 312,751.08
  4. Step 4: Simplify right side
    567,399.66x = 244,888,880,731.52
  5. Step 5: Solve for x
    x = 244,888,880,731.52/567,399.66
  6. Step 6: Final answer
    x = 431,598.57

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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.