Home / 689,422.08-951,173.76-561,878.40

Finding the Fourth Proportional to 689,422.08, 951,173.76 and 561,878.40

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Solution

The fourth proportional to 689,422.08, 951,173.76 and 561,878.40 is: 775,205.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,422.08 : 951,173.76 = 561,878.40 : x
  2. Step 2: Convert to fraction form
    689,422.08/951,173.76 = 561,878.40/x
  3. Step 3: Cross multiply
    689,422.08x = 951,173.76 × 561,878.40
  4. Step 4: Simplify right side
    689,422.08x = 534,443,990,390.78
  5. Step 5: Solve for x
    x = 534,443,990,390.78/689,422.08
  6. Step 6: Final answer
    x = 775,205.79

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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.