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Finding the Fourth Proportional to 526,639.32, 790,040.90 and 171,570.68

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Solution

The fourth proportional to 526,639.32, 790,040.90 and 171,570.68 is: 257,382.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,639.32 : 790,040.90 = 171,570.68 : x
  2. Step 2: Convert to fraction form
    526,639.32/790,040.90 = 171,570.68/x
  3. Step 3: Cross multiply
    526,639.32x = 790,040.90 × 171,570.68
  4. Step 4: Simplify right side
    526,639.32x = 135,547,854,440.81
  5. Step 5: Solve for x
    x = 135,547,854,440.81/526,639.32
  6. Step 6: Final answer
    x = 257,382.71

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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.