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Finding the Fourth Proportional to 721,756.62, 996,059.57 and 415,881.05

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Solution

The fourth proportional to 721,756.62, 996,059.57 and 415,881.05 is: 573,936.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,756.62 : 996,059.57 = 415,881.05 : x
  2. Step 2: Convert to fraction form
    721,756.62/996,059.57 = 415,881.05/x
  3. Step 3: Cross multiply
    721,756.62x = 996,059.57 × 415,881.05
  4. Step 4: Simplify right side
    721,756.62x = 414,242,292,774.45
  5. Step 5: Solve for x
    x = 414,242,292,774.45/721,756.62
  6. Step 6: Final answer
    x = 573,936.26

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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.