Home / 519,123.60-778,831.20-219,747.60

Finding the Fourth Proportional to 519,123.60, 778,831.20 and 219,747.60

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Solution

The fourth proportional to 519,123.60, 778,831.20 and 219,747.60 is: 329,683.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,123.60 : 778,831.20 = 219,747.60 : x
  2. Step 2: Convert to fraction form
    519,123.60/778,831.20 = 219,747.60/x
  3. Step 3: Cross multiply
    519,123.60x = 778,831.20 × 219,747.60
  4. Step 4: Simplify right side
    519,123.60x = 171,146,287,005.12
  5. Step 5: Solve for x
    x = 171,146,287,005.12/519,123.60
  6. Step 6: Final answer
    x = 329,683.12

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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.