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Finding the Fourth Proportional to 506,186.31, 698,675.72 and 315,086.25

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Solution

The fourth proportional to 506,186.31, 698,675.72 and 315,086.25 is: 434,905.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,186.31 : 698,675.72 = 315,086.25 : x
  2. Step 2: Convert to fraction form
    506,186.31/698,675.72 = 315,086.25/x
  3. Step 3: Cross multiply
    506,186.31x = 698,675.72 × 315,086.25
  4. Step 4: Simplify right side
    506,186.31x = 220,143,112,580.85
  5. Step 5: Solve for x
    x = 220,143,112,580.85/506,186.31
  6. Step 6: Final answer
    x = 434,905.31

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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.