Home / 1,387,242.72-2,080,864.08-389,970.72

Finding the Fourth Proportional to 1,387,242.72, 2,080,864.08 and 389,970.72

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Solution

The fourth proportional to 1,387,242.72, 2,080,864.08 and 389,970.72 is: 584,956.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,242.72 : 2,080,864.08 = 389,970.72 : x
  2. Step 2: Convert to fraction form
    1,387,242.72/2,080,864.08 = 389,970.72/x
  3. Step 3: Cross multiply
    1,387,242.72x = 2,080,864.08 × 389,970.72
  4. Step 4: Simplify right side
    1,387,242.72x = 811,476,063,499.74
  5. Step 5: Solve for x
    x = 811,476,063,499.74/1,387,242.72
  6. Step 6: Final answer
    x = 584,956.08

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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.