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Finding the Fourth Proportional to 506,469.72, 698,928.30 and 305,304.60

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Solution

The fourth proportional to 506,469.72, 698,928.30 and 305,304.60 is: 421,320.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,469.72 : 698,928.30 = 305,304.60 : x
  2. Step 2: Convert to fraction form
    506,469.72/698,928.30 = 305,304.60/x
  3. Step 3: Cross multiply
    506,469.72x = 698,928.30 × 305,304.60
  4. Step 4: Simplify right side
    506,469.72x = 213,386,025,060.18
  5. Step 5: Solve for x
    x = 213,386,025,060.18/506,469.72
  6. Step 6: Final answer
    x = 421,320.40

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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.