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Finding the Fourth Proportional to 553,583.57, 764,001.76 and 338,865.53

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Solution

The fourth proportional to 553,583.57, 764,001.76 and 338,865.53 is: 467,668.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,583.57 : 764,001.76 = 338,865.53 : x
  2. Step 2: Convert to fraction form
    553,583.57/764,001.76 = 338,865.53/x
  3. Step 3: Cross multiply
    553,583.57x = 764,001.76 × 338,865.53
  4. Step 4: Simplify right side
    553,583.57x = 258,893,860,476.17
  5. Step 5: Solve for x
    x = 258,893,860,476.17/553,583.57
  6. Step 6: Final answer
    x = 467,668.97

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1.5x scale

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.