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Finding the Fourth Proportional to 723,780.80, 998,798.20 and 417,846.86

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Solution

The fourth proportional to 723,780.80, 998,798.20 and 417,846.86 is: 576,617.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,780.80 : 998,798.20 = 417,846.86 : x
  2. Step 2: Convert to fraction form
    723,780.80/998,798.20 = 417,846.86/x
  3. Step 3: Cross multiply
    723,780.80x = 998,798.20 × 417,846.86
  4. Step 4: Simplify right side
    723,780.80x = 417,344,691,643.65
  5. Step 5: Solve for x
    x = 417,344,691,643.65/723,780.80
  6. Step 6: Final answer
    x = 576,617.52

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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.