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Finding the Fourth Proportional to 922,267.80, 1,383,401.70 and 257,419.80

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Solution

The fourth proportional to 922,267.80, 1,383,401.70 and 257,419.80 is: 386,129.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,267.80 : 1,383,401.70 = 257,419.80 : x
  2. Step 2: Convert to fraction form
    922,267.80/1,383,401.70 = 257,419.80/x
  3. Step 3: Cross multiply
    922,267.80x = 1,383,401.70 × 257,419.80
  4. Step 4: Simplify right side
    922,267.80x = 356,114,988,933.66
  5. Step 5: Solve for x
    x = 356,114,988,933.66/922,267.80
  6. Step 6: Final answer
    x = 386,129.70

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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.