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Finding the Fourth Proportional to 680,732.50, 939,433.25 and 374,831.35

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Solution

The fourth proportional to 680,732.50, 939,433.25 and 374,831.35 is: 517,279.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,732.50 : 939,433.25 = 374,831.35 : x
  2. Step 2: Convert to fraction form
    680,732.50/939,433.25 = 374,831.35/x
  3. Step 3: Cross multiply
    680,732.50x = 939,433.25 × 374,831.35
  4. Step 4: Simplify right side
    680,732.50x = 352,129,033,332.39
  5. Step 5: Solve for x
    x = 352,129,033,332.39/680,732.50
  6. Step 6: Final answer
    x = 517,279.60

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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.