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Finding the Fourth Proportional to 496,387.70, 744,581.55 and 307,430.90

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Solution

The fourth proportional to 496,387.70, 744,581.55 and 307,430.90 is: 461,146.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,387.70 : 744,581.55 = 307,430.90 : x
  2. Step 2: Convert to fraction form
    496,387.70/744,581.55 = 307,430.90/x
  3. Step 3: Cross multiply
    496,387.70x = 744,581.55 × 307,430.90
  4. Step 4: Simplify right side
    496,387.70x = 228,907,376,039.90
  5. Step 5: Solve for x
    x = 228,907,376,039.90/496,387.70
  6. Step 6: Final answer
    x = 461,146.35

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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.