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Finding the Fourth Proportional to 579,760.86, 869,699.58 and 215,122.32

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Solution

The fourth proportional to 579,760.86, 869,699.58 and 215,122.32 is: 322,705.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,760.86 : 869,699.58 = 215,122.32 : x
  2. Step 2: Convert to fraction form
    579,760.86/869,699.58 = 215,122.32/x
  3. Step 3: Cross multiply
    579,760.86x = 869,699.58 × 215,122.32
  4. Step 4: Simplify right side
    579,760.86x = 187,091,791,352.63
  5. Step 5: Solve for x
    x = 187,091,791,352.63/579,760.86
  6. Step 6: Final answer
    x = 322,705.11

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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.