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Finding the Fourth Proportional to 1,267,736.92, 1,748,927.14 and 838,615.93

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Solution

The fourth proportional to 1,267,736.92, 1,748,927.14 and 838,615.93 is: 1,156,926.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,267,736.92 : 1,748,927.14 = 838,615.93 : x
  2. Step 2: Convert to fraction form
    1,267,736.92/1,748,927.14 = 838,615.93/x
  3. Step 3: Cross multiply
    1,267,736.92x = 1,748,927.14 × 838,615.93
  4. Step 4: Simplify right side
    1,267,736.92x = 1,466,678,164,385.66
  5. Step 5: Solve for x
    x = 1,466,678,164,385.66/1,267,736.92
  6. Step 6: Final answer
    x = 1,156,926.28

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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.