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Finding the Fourth Proportional to 1,400,026.28, 1,931,531.06 and 916,866.95

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Solution

The fourth proportional to 1,400,026.28, 1,931,531.06 and 916,866.95 is: 1,264,945.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400,026.28 : 1,931,531.06 = 916,866.95 : x
  2. Step 2: Convert to fraction form
    1,400,026.28/1,931,531.06 = 916,866.95/x
  3. Step 3: Cross multiply
    1,400,026.28x = 1,931,531.06 × 916,866.95
  4. Step 4: Simplify right side
    1,400,026.28x = 1,770,956,984,446.98
  5. Step 5: Solve for x
    x = 1,770,956,984,446.98/1,400,026.28
  6. Step 6: Final answer
    x = 1,264,945.53

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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.