Home / 563,439.80-777,542.46-308,790.38

Finding the Fourth Proportional to 563,439.80, 777,542.46 and 308,790.38

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Solution

The fourth proportional to 563,439.80, 777,542.46 and 308,790.38 is: 426,128.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,439.80 : 777,542.46 = 308,790.38 : x
  2. Step 2: Convert to fraction form
    563,439.80/777,542.46 = 308,790.38/x
  3. Step 3: Cross multiply
    563,439.80x = 777,542.46 × 308,790.38
  4. Step 4: Simplify right side
    563,439.80x = 240,097,631,689.54
  5. Step 5: Solve for x
    x = 240,097,631,689.54/563,439.80
  6. Step 6: Final answer
    x = 426,128.28

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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.