Home / 680,723.58-939,420.90-374,831.58

Finding the Fourth Proportional to 680,723.58, 939,420.90 and 374,831.58

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Solution

The fourth proportional to 680,723.58, 939,420.90 and 374,831.58 is: 517,279.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,723.58 : 939,420.90 = 374,831.58 : x
  2. Step 2: Convert to fraction form
    680,723.58/939,420.90 = 374,831.58/x
  3. Step 3: Cross multiply
    680,723.58x = 939,420.90 × 374,831.58
  4. Step 4: Simplify right side
    680,723.58x = 352,124,620,232.02
  5. Step 5: Solve for x
    x = 352,124,620,232.02/680,723.58
  6. Step 6: Final answer
    x = 517,279.89

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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.