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Finding the Fourth Proportional to 518,552.40, 778,703.40 and 341,842.80

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Solution

The fourth proportional to 518,552.40, 778,703.40 and 341,842.80 is: 513,340.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,552.40 : 778,703.40 = 341,842.80 : x
  2. Step 2: Convert to fraction form
    518,552.40/778,703.40 = 341,842.80/x
  3. Step 3: Cross multiply
    518,552.40x = 778,703.40 × 341,842.80
  4. Step 4: Simplify right side
    518,552.40x = 266,194,150,625.52
  5. Step 5: Solve for x
    x = 266,194,150,625.52/518,552.40
  6. Step 6: Final answer
    x = 513,340.89

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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.