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Finding the Fourth Proportional to 637,440.77, 879,404.69 and 379,266.10

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Solution

The fourth proportional to 637,440.77, 879,404.69 and 379,266.10 is: 523,230.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,440.77 : 879,404.69 = 379,266.10 : x
  2. Step 2: Convert to fraction form
    637,440.77/879,404.69 = 379,266.10/x
  3. Step 3: Cross multiply
    637,440.77x = 879,404.69 × 379,266.10
  4. Step 4: Simplify right side
    637,440.77x = 333,528,385,847.66
  5. Step 5: Solve for x
    x = 333,528,385,847.66/637,440.77
  6. Step 6: Final answer
    x = 523,230.39

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.