Home / 743,018.05-1,025,368.85-420,790.87

Finding the Fourth Proportional to 743,018.05, 1,025,368.85 and 420,790.87

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Solution

The fourth proportional to 743,018.05, 1,025,368.85 and 420,790.87 is: 580,693.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,018.05 : 1,025,368.85 = 420,790.87 : x
  2. Step 2: Convert to fraction form
    743,018.05/1,025,368.85 = 420,790.87/x
  3. Step 3: Cross multiply
    743,018.05x = 1,025,368.85 × 420,790.87
  4. Step 4: Simplify right side
    743,018.05x = 431,465,843,231.60
  5. Step 5: Solve for x
    x = 431,465,843,231.60/743,018.05
  6. Step 6: Final answer
    x = 580,693.63

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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.