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Finding the Fourth Proportional to 530,420.10, 795,630.15 and 521,672.10

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Solution

The fourth proportional to 530,420.10, 795,630.15 and 521,672.10 is: 782,508.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,420.10 : 795,630.15 = 521,672.10 : x
  2. Step 2: Convert to fraction form
    530,420.10/795,630.15 = 521,672.10/x
  3. Step 3: Cross multiply
    530,420.10x = 795,630.15 × 521,672.10
  4. Step 4: Simplify right side
    530,420.10x = 415,058,051,173.82
  5. Step 5: Solve for x
    x = 415,058,051,173.82/530,420.10
  6. Step 6: Final answer
    x = 782,508.15

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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.