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Finding the Fourth Proportional to 913,671.20, 1,370,701.20 and 282,648.80

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Solution

The fourth proportional to 913,671.20, 1,370,701.20 and 282,648.80 is: 424,033.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,671.20 : 1,370,701.20 = 282,648.80 : x
  2. Step 2: Convert to fraction form
    913,671.20/1,370,701.20 = 282,648.80/x
  3. Step 3: Cross multiply
    913,671.20x = 1,370,701.20 × 282,648.80
  4. Step 4: Simplify right side
    913,671.20x = 387,427,049,338.56
  5. Step 5: Solve for x
    x = 387,427,049,338.56/913,671.20
  6. Step 6: Final answer
    x = 424,033.34

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1.5x scale

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.