Home / 948,340.88-1,308,720.75-518,611.78

Finding the Fourth Proportional to 948,340.88, 1,308,720.75 and 518,611.78

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Solution

The fourth proportional to 948,340.88, 1,308,720.75 and 518,611.78 is: 715,689.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    948,340.88 : 1,308,720.75 = 518,611.78 : x
  2. Step 2: Convert to fraction form
    948,340.88/1,308,720.75 = 518,611.78/x
  3. Step 3: Cross multiply
    948,340.88x = 1,308,720.75 × 518,611.78
  4. Step 4: Simplify right side
    948,340.88x = 678,717,997,371.54
  5. Step 5: Solve for x
    x = 678,717,997,371.54/948,340.88
  6. Step 6: Final answer
    x = 715,689.91

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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.