Home / 957,290.25-1,321,060.75-521,707.70

Finding the Fourth Proportional to 957,290.25, 1,321,060.75 and 521,707.70

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Solution

The fourth proportional to 957,290.25, 1,321,060.75 and 521,707.70 is: 719,956.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    957,290.25 : 1,321,060.75 = 521,707.70 : x
  2. Step 2: Convert to fraction form
    957,290.25/1,321,060.75 = 521,707.70/x
  3. Step 3: Cross multiply
    957,290.25x = 1,321,060.75 × 521,707.70
  4. Step 4: Simplify right side
    957,290.25x = 689,207,565,442.78
  5. Step 5: Solve for x
    x = 689,207,565,442.78/957,290.25
  6. Step 6: Final answer
    x = 719,956.74

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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.