Home / 718,909.08-992,097.78-396,619.02

Finding the Fourth Proportional to 718,909.08, 992,097.78 and 396,619.02

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Solution

The fourth proportional to 718,909.08, 992,097.78 and 396,619.02 is: 547,336.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,909.08 : 992,097.78 = 396,619.02 : x
  2. Step 2: Convert to fraction form
    718,909.08/992,097.78 = 396,619.02/x
  3. Step 3: Cross multiply
    718,909.08x = 992,097.78 × 396,619.02
  4. Step 4: Simplify right side
    718,909.08x = 393,484,849,247.78
  5. Step 5: Solve for x
    x = 393,484,849,247.78/718,909.08
  6. Step 6: Final answer
    x = 547,336.04

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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.