Home / 838,400.40-1,255,129.56-553,568.40

Finding the Fourth Proportional to 838,400.40, 1,255,129.56 and 553,568.40

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Solution

The fourth proportional to 838,400.40, 1,255,129.56 and 553,568.40 is: 828,721.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,400.40 : 1,255,129.56 = 553,568.40 : x
  2. Step 2: Convert to fraction form
    838,400.40/1,255,129.56 = 553,568.40/x
  3. Step 3: Cross multiply
    838,400.40x = 1,255,129.56 × 553,568.40
  4. Step 4: Simplify right side
    838,400.40x = 694,800,062,321.90
  5. Step 5: Solve for x
    x = 694,800,062,321.90/838,400.40
  6. Step 6: Final answer
    x = 828,721.05

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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.