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Finding the Fourth Proportional to 1,258,133.70, 1,736,367.93 and 748,837.70

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Solution

The fourth proportional to 1,258,133.70, 1,736,367.93 and 748,837.70 is: 1,033,481.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258,133.70 : 1,736,367.93 = 748,837.70 : x
  2. Step 2: Convert to fraction form
    1,258,133.70/1,736,367.93 = 748,837.70/x
  3. Step 3: Cross multiply
    1,258,133.70x = 1,736,367.93 × 748,837.70
  4. Step 4: Simplify right side
    1,258,133.70x = 1,300,257,767,054.96
  5. Step 5: Solve for x
    x = 1,300,257,767,054.96/1,258,133.70
  6. Step 6: Final answer
    x = 1,033,481.39

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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.