Home / 1,387,095.48-2,080,643.20-389,823.48

Finding the Fourth Proportional to 1,387,095.48, 2,080,643.20 and 389,823.48

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Solution

The fourth proportional to 1,387,095.48, 2,080,643.20 and 389,823.48 is: 584,735.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,095.48 : 2,080,643.20 = 389,823.48 : x
  2. Step 2: Convert to fraction form
    1,387,095.48/2,080,643.20 = 389,823.48/x
  3. Step 3: Cross multiply
    1,387,095.48x = 2,080,643.20 × 389,823.48
  4. Step 4: Simplify right side
    1,387,095.48x = 811,083,571,887.78
  5. Step 5: Solve for x
    x = 811,083,571,887.78/1,387,095.48
  6. Step 6: Final answer
    x = 584,735.21

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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.