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Finding the Fourth Proportional to 519,324.60, 778,929.30 and 145,385.40

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Solution

The fourth proportional to 519,324.60, 778,929.30 and 145,385.40 is: 218,061.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,324.60 : 778,929.30 = 145,385.40 : x
  2. Step 2: Convert to fraction form
    519,324.60/778,929.30 = 145,385.40/x
  3. Step 3: Cross multiply
    519,324.60x = 778,929.30 × 145,385.40
  4. Step 4: Simplify right side
    519,324.60x = 113,244,947,852.22
  5. Step 5: Solve for x
    x = 113,244,947,852.22/519,324.60
  6. Step 6: Final answer
    x = 218,061.97

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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.