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Finding the Fourth Proportional to 1,301,328.92, 1,795,833.51 and 728,368.94

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Solution

The fourth proportional to 1,301,328.92, 1,795,833.51 and 728,368.94 is: 1,005,148.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,301,328.92 : 1,795,833.51 = 728,368.94 : x
  2. Step 2: Convert to fraction form
    1,301,328.92/1,795,833.51 = 728,368.94/x
  3. Step 3: Cross multiply
    1,301,328.92x = 1,795,833.51 × 728,368.94
  4. Step 4: Simplify right side
    1,301,328.92x = 1,308,029,350,095.18
  5. Step 5: Solve for x
    x = 1,308,029,350,095.18/1,301,328.92
  6. Step 6: Final answer
    x = 1,005,148.91

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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.