Home / 1,289,356.97-1,934,421.83-520,458.80

Finding the Fourth Proportional to 1,289,356.97, 1,934,421.83 and 520,458.80

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Solution

The fourth proportional to 1,289,356.97, 1,934,421.83 and 520,458.80 is: 780,844.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,356.97 : 1,934,421.83 = 520,458.80 : x
  2. Step 2: Convert to fraction form
    1,289,356.97/1,934,421.83 = 520,458.80/x
  3. Step 3: Cross multiply
    1,289,356.97x = 1,934,421.83 × 520,458.80
  4. Step 4: Simplify right side
    1,289,356.97x = 1,006,786,852,061.20
  5. Step 5: Solve for x
    x = 1,006,786,852,061.20/1,289,356.97
  6. Step 6: Final answer
    x = 780,844.16

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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.