Home / 938,073.25-1,294,987.40-628,508.87

Finding the Fourth Proportional to 938,073.25, 1,294,987.40 and 628,508.87

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Solution

The fourth proportional to 938,073.25, 1,294,987.40 and 628,508.87 is: 867,641.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,073.25 : 1,294,987.40 = 628,508.87 : x
  2. Step 2: Convert to fraction form
    938,073.25/1,294,987.40 = 628,508.87/x
  3. Step 3: Cross multiply
    938,073.25x = 1,294,987.40 × 628,508.87
  4. Step 4: Simplify right side
    938,073.25x = 813,911,065,033.87
  5. Step 5: Solve for x
    x = 813,911,065,033.87/938,073.25
  6. Step 6: Final answer
    x = 867,641.27

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1.5x scale

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.