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Finding the Fourth Proportional to 1,267,848.92, 1,749,081.67 and 838,726.72

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Solution

The fourth proportional to 1,267,848.92, 1,749,081.67 and 838,726.72 is: 1,157,079.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,267,848.92 : 1,749,081.67 = 838,726.72 : x
  2. Step 2: Convert to fraction form
    1,267,848.92/1,749,081.67 = 838,726.72/x
  3. Step 3: Cross multiply
    1,267,848.92x = 1,749,081.67 × 838,726.72
  4. Step 4: Simplify right side
    1,267,848.92x = 1,467,001,525,621.70
  5. Step 5: Solve for x
    x = 1,467,001,525,621.70/1,267,848.92
  6. Step 6: Final answer
    x = 1,157,079.13

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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.