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Finding the Fourth Proportional to 486,000.50, 670,680.69 and 284,796.50

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Solution

The fourth proportional to 486,000.50, 670,680.69 and 284,796.50 is: 393,019.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,000.50 : 670,680.69 = 284,796.50 : x
  2. Step 2: Convert to fraction form
    486,000.50/670,680.69 = 284,796.50/x
  3. Step 3: Cross multiply
    486,000.50x = 670,680.69 × 284,796.50
  4. Step 4: Simplify right side
    486,000.50x = 191,007,513,129.59
  5. Step 5: Solve for x
    x = 191,007,513,129.59/486,000.50
  6. Step 6: Final answer
    x = 393,019.17

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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.