Home / 775,616.73-1,069,913.79-465,438.98

Finding the Fourth Proportional to 775,616.73, 1,069,913.79 and 465,438.98

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Solution

The fourth proportional to 775,616.73, 1,069,913.79 and 465,438.98 is: 642,043.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    775,616.73 : 1,069,913.79 = 465,438.98 : x
  2. Step 2: Convert to fraction form
    775,616.73/1,069,913.79 = 465,438.98/x
  3. Step 3: Cross multiply
    775,616.73x = 1,069,913.79 × 465,438.98
  4. Step 4: Simplify right side
    775,616.73x = 497,979,583,105.53
  5. Step 5: Solve for x
    x = 497,979,583,105.53/775,616.73
  6. Step 6: Final answer
    x = 642,043.38

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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.