Home / 718,361.22-991,979.28-684,331.50

Finding the Fourth Proportional to 718,361.22, 991,979.28 and 684,331.50

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Solution

The fourth proportional to 718,361.22, 991,979.28 and 684,331.50 is: 944,987.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,361.22 : 991,979.28 = 684,331.50 : x
  2. Step 2: Convert to fraction form
    718,361.22/991,979.28 = 684,331.50/x
  3. Step 3: Cross multiply
    718,361.22x = 991,979.28 × 684,331.50
  4. Step 4: Simplify right side
    718,361.22x = 678,842,668,651.32
  5. Step 5: Solve for x
    x = 678,842,668,651.32/718,361.22
  6. Step 6: Final answer
    x = 944,987.91

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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.