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Finding the Fourth Proportional to 624,470.05, 861,751.30 and 348,820.57

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Solution

The fourth proportional to 624,470.05, 861,751.30 and 348,820.57 is: 481,362.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,470.05 : 861,751.30 = 348,820.57 : x
  2. Step 2: Convert to fraction form
    624,470.05/861,751.30 = 348,820.57/x
  3. Step 3: Cross multiply
    624,470.05x = 861,751.30 × 348,820.57
  4. Step 4: Simplify right side
    624,470.05x = 300,596,573,611.38
  5. Step 5: Solve for x
    x = 300,596,573,611.38/624,470.05
  6. Step 6: Final answer
    x = 481,362.68

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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.