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Finding the Fourth Proportional to 869,615.74, 1,200,241.83 and 564,070.78

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Solution

The fourth proportional to 869,615.74, 1,200,241.83 and 564,070.78 is: 778,529.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,615.74 : 1,200,241.83 = 564,070.78 : x
  2. Step 2: Convert to fraction form
    869,615.74/1,200,241.83 = 564,070.78/x
  3. Step 3: Cross multiply
    869,615.74x = 1,200,241.83 × 564,070.78
  4. Step 4: Simplify right side
    869,615.74x = 677,021,345,236.73
  5. Step 5: Solve for x
    x = 677,021,345,236.73/869,615.74
  6. Step 6: Final answer
    x = 778,529.31

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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.