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Finding the Fourth Proportional to 520,089, 717,722.82 and 281,625

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Solution

The fourth proportional to 520,089, 717,722.82 and 281,625 is: 388,642.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,089 : 717,722.82 = 281,625 : x
  2. Step 2: Convert to fraction form
    520,089/717,722.82 = 281,625/x
  3. Step 3: Cross multiply
    520,089x = 717,722.82 × 281,625
  4. Step 4: Simplify right side
    520,089x = 202,128,689,182.50
  5. Step 5: Solve for x
    x = 202,128,689,182.50/520,089
  6. Step 6: Final answer
    x = 388,642.50

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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.