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Finding the Fourth Proportional to 6,387,612.90, 9,581,419.35 and 5,757,756.90

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Solution

The fourth proportional to 6,387,612.90, 9,581,419.35 and 5,757,756.90 is: 8,636,635.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,387,612.90 : 9,581,419.35 = 5,757,756.90 : x
  2. Step 2: Convert to fraction form
    6,387,612.90/9,581,419.35 = 5,757,756.90/x
  3. Step 3: Cross multiply
    6,387,612.90x = 9,581,419.35 × 5,757,756.90
  4. Step 4: Simplify right side
    6,387,612.90x = 55,167,483,374,256.02
  5. Step 5: Solve for x
    x = 55,167,483,374,256.02/6,387,612.90
  6. Step 6: Final answer
    x = 8,636,635.35

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Double scale
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Similar ratio
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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.