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Finding the Fourth Proportional to 487,365.42, 729,276.66 and 402,334.86

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Solution

The fourth proportional to 487,365.42, 729,276.66 and 402,334.86 is: 602,039.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,365.42 : 729,276.66 = 402,334.86 : x
  2. Step 2: Convert to fraction form
    487,365.42/729,276.66 = 402,334.86/x
  3. Step 3: Cross multiply
    487,365.42x = 729,276.66 × 402,334.86
  4. Step 4: Simplify right side
    487,365.42x = 293,413,422,902.37
  5. Step 5: Solve for x
    x = 293,413,422,902.37/487,365.42
  6. Step 6: Final answer
    x = 602,039.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.