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Finding the Fourth Proportional to 624,266.60, 936,399.90 and 340,831.40

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Solution

The fourth proportional to 624,266.60, 936,399.90 and 340,831.40 is: 511,247.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,266.60 : 936,399.90 = 340,831.40 : x
  2. Step 2: Convert to fraction form
    624,266.60/936,399.90 = 340,831.40/x
  3. Step 3: Cross multiply
    624,266.60x = 936,399.90 × 340,831.40
  4. Step 4: Simplify right side
    624,266.60x = 319,154,488,876.86
  5. Step 5: Solve for x
    x = 319,154,488,876.86/624,266.60
  6. Step 6: Final answer
    x = 511,247.10

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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.