Home / 638,522.90-957,784.35-355,087.70

Finding the Fourth Proportional to 638,522.90, 957,784.35 and 355,087.70

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Solution

The fourth proportional to 638,522.90, 957,784.35 and 355,087.70 is: 532,631.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,522.90 : 957,784.35 = 355,087.70 : x
  2. Step 2: Convert to fraction form
    638,522.90/957,784.35 = 355,087.70/x
  3. Step 3: Cross multiply
    638,522.90x = 957,784.35 × 355,087.70
  4. Step 4: Simplify right side
    638,522.90x = 340,097,441,937.50
  5. Step 5: Solve for x
    x = 340,097,441,937.50/638,522.90
  6. Step 6: Final answer
    x = 532,631.55

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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.