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Finding the Fourth Proportional to 651,207.38, 898,668.95 and 379,461.69

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Solution

The fourth proportional to 651,207.38, 898,668.95 and 379,461.69 is: 523,658.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,207.38 : 898,668.95 = 379,461.69 : x
  2. Step 2: Convert to fraction form
    651,207.38/898,668.95 = 379,461.69/x
  3. Step 3: Cross multiply
    651,207.38x = 898,668.95 × 379,461.69
  4. Step 4: Simplify right side
    651,207.38x = 341,010,436,620.22
  5. Step 5: Solve for x
    x = 341,010,436,620.22/651,207.38
  6. Step 6: Final answer
    x = 523,658.74

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Double scale
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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.