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Finding the Fourth Proportional to 563,120.78, 777,107.94 and 308,472.98

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Solution

The fourth proportional to 563,120.78, 777,107.94 and 308,472.98 is: 425,693.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,120.78 : 777,107.94 = 308,472.98 : x
  2. Step 2: Convert to fraction form
    563,120.78/777,107.94 = 308,472.98/x
  3. Step 3: Cross multiply
    563,120.78x = 777,107.94 × 308,472.98
  4. Step 4: Simplify right side
    563,120.78x = 239,716,802,033.46
  5. Step 5: Solve for x
    x = 239,716,802,033.46/563,120.78
  6. Step 6: Final answer
    x = 425,693.40

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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.