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Finding the Fourth Proportional to 624,705.40, 936,366.90 and 344,423.80

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Solution

The fourth proportional to 624,705.40, 936,366.90 and 344,423.80 is: 516,254.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,705.40 : 936,366.90 = 344,423.80 : x
  2. Step 2: Convert to fraction form
    624,705.40/936,366.90 = 344,423.80/x
  3. Step 3: Cross multiply
    624,705.40x = 936,366.90 × 344,423.80
  4. Step 4: Simplify right side
    624,705.40x = 322,507,045,892.22
  5. Step 5: Solve for x
    x = 322,507,045,892.22/624,705.40
  6. Step 6: Final answer
    x = 516,254.62

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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.