Home / 879,725.40-1,213,987.96-497,760.44

Finding the Fourth Proportional to 879,725.40, 1,213,987.96 and 497,760.44

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Solution

The fourth proportional to 879,725.40, 1,213,987.96 and 497,760.44 is: 686,890.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,725.40 : 1,213,987.96 = 497,760.44 : x
  2. Step 2: Convert to fraction form
    879,725.40/1,213,987.96 = 497,760.44/x
  3. Step 3: Cross multiply
    879,725.40x = 1,213,987.96 × 497,760.44
  4. Step 4: Simplify right side
    879,725.40x = 604,275,181,124.30
  5. Step 5: Solve for x
    x = 604,275,181,124.30/879,725.40
  6. Step 6: Final answer
    x = 686,890.68

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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.