Home / 1,223,318.71-1,688,132.80-679,489.14

Finding the Fourth Proportional to 1,223,318.71, 1,688,132.80 and 679,489.14

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Solution

The fourth proportional to 1,223,318.71, 1,688,132.80 and 679,489.14 is: 937,668.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,318.71 : 1,688,132.80 = 679,489.14 : x
  2. Step 2: Convert to fraction form
    1,223,318.71/1,688,132.80 = 679,489.14/x
  3. Step 3: Cross multiply
    1,223,318.71x = 1,688,132.80 × 679,489.14
  4. Step 4: Simplify right side
    1,223,318.71x = 1,147,067,911,657.65
  5. Step 5: Solve for x
    x = 1,147,067,911,657.65/1,223,318.71
  6. Step 6: Final answer
    x = 937,668.90

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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.