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Finding the Fourth Proportional to 563,289.36, 777,339.78 and 308,640.54

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Solution

The fourth proportional to 563,289.36, 777,339.78 and 308,640.54 is: 425,924.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,289.36 : 777,339.78 = 308,640.54 : x
  2. Step 2: Convert to fraction form
    563,289.36/777,339.78 = 308,640.54/x
  3. Step 3: Cross multiply
    563,289.36x = 777,339.78 × 308,640.54
  4. Step 4: Simplify right side
    563,289.36x = 239,918,569,462.68
  5. Step 5: Solve for x
    x = 239,918,569,462.68/563,289.36
  6. Step 6: Final answer
    x = 425,924.20

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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.