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Finding the Fourth Proportional to 723,551.79, 998,562.85 and 401,365.69

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Solution

The fourth proportional to 723,551.79, 998,562.85 and 401,365.69 is: 553,918.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,551.79 : 998,562.85 = 401,365.69 : x
  2. Step 2: Convert to fraction form
    723,551.79/998,562.85 = 401,365.69/x
  3. Step 3: Cross multiply
    723,551.79x = 998,562.85 × 401,365.69
  4. Step 4: Simplify right side
    723,551.79x = 400,788,866,056.48
  5. Step 5: Solve for x
    x = 400,788,866,056.48/723,551.79
  6. Step 6: Final answer
    x = 553,918.70

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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.