Home / 931,422.87-1,285,378.72-512,335.22

Finding the Fourth Proportional to 931,422.87, 1,285,378.72 and 512,335.22

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Solution

The fourth proportional to 931,422.87, 1,285,378.72 and 512,335.22 is: 707,030.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,422.87 : 1,285,378.72 = 512,335.22 : x
  2. Step 2: Convert to fraction form
    931,422.87/1,285,378.72 = 512,335.22/x
  3. Step 3: Cross multiply
    931,422.87x = 1,285,378.72 × 512,335.22
  4. Step 4: Simplify right side
    931,422.87x = 658,544,790,575.36
  5. Step 5: Solve for x
    x = 658,544,790,575.36/931,422.87
  6. Step 6: Final answer
    x = 707,030.95

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1.5x scale

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.