Home / 563,438.80-777,541.08-308,789.38

Finding the Fourth Proportional to 563,438.80, 777,541.08 and 308,789.38

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Solution

The fourth proportional to 563,438.80, 777,541.08 and 308,789.38 is: 426,126.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,438.80 : 777,541.08 = 308,789.38 : x
  2. Step 2: Convert to fraction form
    563,438.80/777,541.08 = 308,789.38/x
  3. Step 3: Cross multiply
    563,438.80x = 777,541.08 × 308,789.38
  4. Step 4: Simplify right side
    563,438.80x = 240,096,428,017.73
  5. Step 5: Solve for x
    x = 240,096,428,017.73/563,438.80
  6. Step 6: Final answer
    x = 426,126.90

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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.