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Finding the Fourth Proportional to 563,119.66, 777,105.27 and 308,479.90

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Solution

The fourth proportional to 563,119.66, 777,105.27 and 308,479.90 is: 425,702.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,119.66 : 777,105.27 = 308,479.90 : x
  2. Step 2: Convert to fraction form
    563,119.66/777,105.27 = 308,479.90/x
  3. Step 3: Cross multiply
    563,119.66x = 777,105.27 × 308,479.90
  4. Step 4: Simplify right side
    563,119.66x = 239,721,355,979.07
  5. Step 5: Solve for x
    x = 239,721,355,979.07/563,119.66
  6. Step 6: Final answer
    x = 425,702.34

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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.