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Finding the Fourth Proportional to 898,557, 1,238,997.78 and 734,702.28

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Solution

The fourth proportional to 898,557, 1,238,997.78 and 734,702.28 is: 1,013,062.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,557 : 1,238,997.78 = 734,702.28 : x
  2. Step 2: Convert to fraction form
    898,557/1,238,997.78 = 734,702.28/x
  3. Step 3: Cross multiply
    898,557x = 1,238,997.78 × 734,702.28
  4. Step 4: Simplify right side
    898,557x = 910,294,493,880.94
  5. Step 5: Solve for x
    x = 910,294,493,880.94/898,557
  6. Step 6: Final answer
    x = 1,013,062.60

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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.