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Finding the Fourth Proportional to 580,246.20, 870,369.30 and 519,228.90

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Solution

The fourth proportional to 580,246.20, 870,369.30 and 519,228.90 is: 778,843.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,246.20 : 870,369.30 = 519,228.90 : x
  2. Step 2: Convert to fraction form
    580,246.20/870,369.30 = 519,228.90/x
  3. Step 3: Cross multiply
    580,246.20x = 870,369.30 × 519,228.90
  4. Step 4: Simplify right side
    580,246.20x = 451,920,894,232.77
  5. Step 5: Solve for x
    x = 451,920,894,232.77/580,246.20
  6. Step 6: Final answer
    x = 778,843.35

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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.