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Finding the Fourth Proportional to 723,188.82, 998,009.59 and 417,328.68

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Solution

The fourth proportional to 723,188.82, 998,009.59 and 417,328.68 is: 575,918.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,188.82 : 998,009.59 = 417,328.68 : x
  2. Step 2: Convert to fraction form
    723,188.82/998,009.59 = 417,328.68/x
  3. Step 3: Cross multiply
    723,188.82x = 998,009.59 × 417,328.68
  4. Step 4: Simplify right side
    723,188.82x = 416,498,024,822.04
  5. Step 5: Solve for x
    x = 416,498,024,822.04/723,188.82
  6. Step 6: Final answer
    x = 575,918.78

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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.