Home / 476,918.25-715,984.40-309,140.65

Finding the Fourth Proportional to 476,918.25, 715,984.40 and 309,140.65

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Solution

The fourth proportional to 476,918.25, 715,984.40 and 309,140.65 is: 464,104.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,918.25 : 715,984.40 = 309,140.65 : x
  2. Step 2: Convert to fraction form
    476,918.25/715,984.40 = 309,140.65/x
  3. Step 3: Cross multiply
    476,918.25x = 715,984.40 × 309,140.65
  4. Step 4: Simplify right side
    476,918.25x = 221,339,882,805.86
  5. Step 5: Solve for x
    x = 221,339,882,805.86/476,918.25
  6. Step 6: Final answer
    x = 464,104.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.