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Finding the Fourth Proportional to 519,124.40, 778,945.80 and 294,657.20

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Solution

The fourth proportional to 519,124.40, 778,945.80 and 294,657.20 is: 442,132.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,124.40 : 778,945.80 = 294,657.20 : x
  2. Step 2: Convert to fraction form
    519,124.40/778,945.80 = 294,657.20/x
  3. Step 3: Cross multiply
    519,124.40x = 778,945.80 × 294,657.20
  4. Step 4: Simplify right side
    519,124.40x = 229,521,988,379.76
  5. Step 5: Solve for x
    x = 229,521,988,379.76/519,124.40
  6. Step 6: Final answer
    x = 442,132.92

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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.