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Finding the Fourth Proportional to 528,508.93, 729,338.62 and 286,785.35

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Solution

The fourth proportional to 528,508.93, 729,338.62 and 286,785.35 is: 395,761.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,508.93 : 729,338.62 = 286,785.35 : x
  2. Step 2: Convert to fraction form
    528,508.93/729,338.62 = 286,785.35/x
  3. Step 3: Cross multiply
    528,508.93x = 729,338.62 × 286,785.35
  4. Step 4: Simplify right side
    528,508.93x = 209,163,629,971.29
  5. Step 5: Solve for x
    x = 209,163,629,971.29/528,508.93
  6. Step 6: Final answer
    x = 395,761.77

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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.