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Finding the Fourth Proportional to 520,004.20, 730,105.40 and 520,004.20

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Solution

The fourth proportional to 520,004.20, 730,105.40 and 520,004.20 is: 730,105.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,004.20 : 730,105.40 = 520,004.20 : x
  2. Step 2: Convert to fraction form
    520,004.20/730,105.40 = 520,004.20/x
  3. Step 3: Cross multiply
    520,004.20x = 730,105.40 × 520,004.20
  4. Step 4: Simplify right side
    520,004.20x = 379,657,874,442.68
  5. Step 5: Solve for x
    x = 379,657,874,442.68/520,004.20
  6. Step 6: Final answer
    x = 730,105.40

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