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Finding the Fourth Proportional to 563,454.21, 777,565.31 and 305,338.32

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Solution

The fourth proportional to 563,454.21, 777,565.31 and 305,338.32 is: 421,366.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,454.21 : 777,565.31 = 305,338.32 : x
  2. Step 2: Convert to fraction form
    563,454.21/777,565.31 = 305,338.32/x
  3. Step 3: Cross multiply
    563,454.21x = 777,565.31 × 305,338.32
  4. Step 4: Simplify right side
    563,454.21x = 237,420,485,445.68
  5. Step 5: Solve for x
    x = 237,420,485,445.68/563,454.21
  6. Step 6: Final answer
    x = 421,366.07

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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.