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Finding the Fourth Proportional to 913,518, 1,370,407.68 and 282,480.48

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Solution

The fourth proportional to 913,518, 1,370,407.68 and 282,480.48 is: 423,761.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,518 : 1,370,407.68 = 282,480.48 : x
  2. Step 2: Convert to fraction form
    913,518/1,370,407.68 = 282,480.48/x
  3. Step 3: Cross multiply
    913,518x = 1,370,407.68 × 282,480.48
  4. Step 4: Simplify right side
    913,518x = 387,113,419,242.09
  5. Step 5: Solve for x
    x = 387,113,419,242.09/913,518
  6. Step 6: Final answer
    x = 423,761.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.