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Finding the Fourth Proportional to 1,292,819.28, 1,938,329.52 and 572,770.32

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Solution

The fourth proportional to 1,292,819.28, 1,938,329.52 and 572,770.32 is: 858,757.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,819.28 : 1,938,329.52 = 572,770.32 : x
  2. Step 2: Convert to fraction form
    1,292,819.28/1,938,329.52 = 572,770.32/x
  3. Step 3: Cross multiply
    1,292,819.28x = 1,938,329.52 × 572,770.32
  4. Step 4: Simplify right side
    1,292,819.28x = 1,110,217,619,435.85
  5. Step 5: Solve for x
    x = 1,110,217,619,435.85/1,292,819.28
  6. Step 6: Final answer
    x = 858,757.01

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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.