Home / 1,138,830-1,571,449.20-629,463.12

Finding the Fourth Proportional to 1,138,830, 1,571,449.20 and 629,463.12

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Solution

The fourth proportional to 1,138,830, 1,571,449.20 and 629,463.12 is: 868,583.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,830 : 1,571,449.20 = 629,463.12 : x
  2. Step 2: Convert to fraction form
    1,138,830/1,571,449.20 = 629,463.12/x
  3. Step 3: Cross multiply
    1,138,830x = 1,571,449.20 × 629,463.12
  4. Step 4: Simplify right side
    1,138,830x = 989,169,316,353.50
  5. Step 5: Solve for x
    x = 989,169,316,353.50/1,138,830
  6. Step 6: Final answer
    x = 868,583.82

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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.