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Finding the Fourth Proportional to 496,508.40, 745,070.40 and 260,020.80

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Solution

The fourth proportional to 496,508.40, 745,070.40 and 260,020.80 is: 390,192.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,508.40 : 745,070.40 = 260,020.80 : x
  2. Step 2: Convert to fraction form
    496,508.40/745,070.40 = 260,020.80/x
  3. Step 3: Cross multiply
    496,508.40x = 745,070.40 × 260,020.80
  4. Step 4: Simplify right side
    496,508.40x = 193,733,801,464.32
  5. Step 5: Solve for x
    x = 193,733,801,464.32/496,508.40
  6. Step 6: Final answer
    x = 390,192.39

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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.