Home / 658,097.10-987,145.65-258,605.10

Finding the Fourth Proportional to 658,097.10, 987,145.65 and 258,605.10

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Solution

The fourth proportional to 658,097.10, 987,145.65 and 258,605.10 is: 387,907.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,097.10 : 987,145.65 = 258,605.10 : x
  2. Step 2: Convert to fraction form
    658,097.10/987,145.65 = 258,605.10/x
  3. Step 3: Cross multiply
    658,097.10x = 987,145.65 × 258,605.10
  4. Step 4: Simplify right side
    658,097.10x = 255,280,899,532.82
  5. Step 5: Solve for x
    x = 255,280,899,532.82/658,097.10
  6. Step 6: Final answer
    x = 387,907.65

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Double scale
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Similar ratio
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1.5x scale

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.