Home / 938,876.40-1,295,646.84-509,155.20

Finding the Fourth Proportional to 938,876.40, 1,295,646.84 and 509,155.20

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Solution

The fourth proportional to 938,876.40, 1,295,646.84 and 509,155.20 is: 702,632.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,876.40 : 1,295,646.84 = 509,155.20 : x
  2. Step 2: Convert to fraction form
    938,876.40/1,295,646.84 = 509,155.20/x
  3. Step 3: Cross multiply
    938,876.40x = 1,295,646.84 × 509,155.20
  4. Step 4: Simplify right side
    938,876.40x = 659,685,325,949.57
  5. Step 5: Solve for x
    x = 659,685,325,949.57/938,876.40
  6. Step 6: Final answer
    x = 702,632.77

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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.