Home / 718,315.74-991,282.44-396,037.35

Finding the Fourth Proportional to 718,315.74, 991,282.44 and 396,037.35

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Solution

The fourth proportional to 718,315.74, 991,282.44 and 396,037.35 is: 546,535.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,315.74 : 991,282.44 = 396,037.35 : x
  2. Step 2: Convert to fraction form
    718,315.74/991,282.44 = 396,037.35/x
  3. Step 3: Cross multiply
    718,315.74x = 991,282.44 × 396,037.35
  4. Step 4: Simplify right side
    718,315.74x = 392,584,870,639.13
  5. Step 5: Solve for x
    x = 392,584,870,639.13/718,315.74
  6. Step 6: Final answer
    x = 546,535.25

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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.