Home / 1,387,102.79-2,080,654.16-389,830.79

Finding the Fourth Proportional to 1,387,102.79, 2,080,654.16 and 389,830.79

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Solution

The fourth proportional to 1,387,102.79, 2,080,654.16 and 389,830.79 is: 584,746.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,102.79 : 2,080,654.16 = 389,830.79 : x
  2. Step 2: Convert to fraction form
    1,387,102.79/2,080,654.16 = 389,830.79/x
  3. Step 3: Cross multiply
    1,387,102.79x = 2,080,654.16 × 389,830.79
  4. Step 4: Simplify right side
    1,387,102.79x = 811,103,058,162.07
  5. Step 5: Solve for x
    x = 811,103,058,162.07/1,387,102.79
  6. Step 6: Final answer
    x = 584,746.18

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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.