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Finding the Fourth Proportional to 610,424.20, 916,073.70 and 343,901.80

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Solution

The fourth proportional to 610,424.20, 916,073.70 and 343,901.80 is: 516,099.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,424.20 : 916,073.70 = 343,901.80 : x
  2. Step 2: Convert to fraction form
    610,424.20/916,073.70 = 343,901.80/x
  3. Step 3: Cross multiply
    610,424.20x = 916,073.70 × 343,901.80
  4. Step 4: Simplify right side
    610,424.20x = 315,039,394,362.66
  5. Step 5: Solve for x
    x = 315,039,394,362.66/610,424.20
  6. Step 6: Final answer
    x = 516,099.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.