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Finding the Fourth Proportional to 563,118.66, 777,103.89 and 308,478.90

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Solution

The fourth proportional to 563,118.66, 777,103.89 and 308,478.90 is: 425,700.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,118.66 : 777,103.89 = 308,478.90 : x
  2. Step 2: Convert to fraction form
    563,118.66/777,103.89 = 308,478.90/x
  3. Step 3: Cross multiply
    563,118.66x = 777,103.89 × 308,478.90
  4. Step 4: Simplify right side
    563,118.66x = 239,720,153,172.92
  5. Step 5: Solve for x
    x = 239,720,153,172.92/563,118.66
  6. Step 6: Final answer
    x = 425,700.96

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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.