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Finding the Fourth Proportional to 563,442.80, 777,546.60 and 308,793.40

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Solution

The fourth proportional to 563,442.80, 777,546.60 and 308,793.40 is: 426,132.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,442.80 : 777,546.60 = 308,793.40 : x
  2. Step 2: Convert to fraction form
    563,442.80/777,546.60 = 308,793.40/x
  3. Step 3: Cross multiply
    563,442.80x = 777,546.60 × 308,793.40
  4. Step 4: Simplify right side
    563,442.80x = 240,101,258,272.44
  5. Step 5: Solve for x
    x = 240,101,258,272.44/563,442.80
  6. Step 6: Final answer
    x = 426,132.45

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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.