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Finding the Fourth Proportional to 566,611.92, 781,929.12 and 308,490.60

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Solution

The fourth proportional to 566,611.92, 781,929.12 and 308,490.60 is: 425,719.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,611.92 : 781,929.12 = 308,490.60 : x
  2. Step 2: Convert to fraction form
    566,611.92/781,929.12 = 308,490.60/x
  3. Step 3: Cross multiply
    566,611.92x = 781,929.12 × 308,490.60
  4. Step 4: Simplify right side
    566,611.92x = 241,217,783,386.27
  5. Step 5: Solve for x
    x = 241,217,783,386.27/566,611.92
  6. Step 6: Final answer
    x = 425,719.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.