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Finding the Fourth Proportional to 572,334.88, 858,520.78 and 287,870.20

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Solution

The fourth proportional to 572,334.88, 858,520.78 and 287,870.20 is: 431,814.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,334.88 : 858,520.78 = 287,870.20 : x
  2. Step 2: Convert to fraction form
    572,334.88/858,520.78 = 287,870.20/x
  3. Step 3: Cross multiply
    572,334.88x = 858,520.78 × 287,870.20
  4. Step 4: Simplify right side
    572,334.88x = 247,142,548,642.76
  5. Step 5: Solve for x
    x = 247,142,548,642.76/572,334.88
  6. Step 6: Final answer
    x = 431,814.58

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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.