Home / 629,097.76-942,981.90-428,921.92

Finding the Fourth Proportional to 629,097.76, 942,981.90 and 428,921.92

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Solution

The fourth proportional to 629,097.76, 942,981.90 and 428,921.92 is: 642,929.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,097.76 : 942,981.90 = 428,921.92 : x
  2. Step 2: Convert to fraction form
    629,097.76/942,981.90 = 428,921.92/x
  3. Step 3: Cross multiply
    629,097.76x = 942,981.90 × 428,921.92
  4. Step 4: Simplify right side
    629,097.76x = 404,465,607,073.25
  5. Step 5: Solve for x
    x = 404,465,607,073.25/629,097.76
  6. Step 6: Final answer
    x = 642,929.66

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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.