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Finding the Fourth Proportional to 723,803.72, 998,699.56 and 417,874.80

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Solution

The fourth proportional to 723,803.72, 998,699.56 and 417,874.80 is: 576,580.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,803.72 : 998,699.56 = 417,874.80 : x
  2. Step 2: Convert to fraction form
    723,803.72/998,699.56 = 417,874.80/x
  3. Step 3: Cross multiply
    723,803.72x = 998,699.56 × 417,874.80
  4. Step 4: Simplify right side
    723,803.72x = 417,331,378,895.09
  5. Step 5: Solve for x
    x = 417,331,378,895.09/723,803.72
  6. Step 6: Final answer
    x = 576,580.87

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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.