Home / 489,826.40-734,739.60-134,895.20

Finding the Fourth Proportional to 489,826.40, 734,739.60 and 134,895.20

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Solution

The fourth proportional to 489,826.40, 734,739.60 and 134,895.20 is: 202,342.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,826.40 : 734,739.60 = 134,895.20 : x
  2. Step 2: Convert to fraction form
    489,826.40/734,739.60 = 134,895.20/x
  3. Step 3: Cross multiply
    489,826.40x = 734,739.60 × 134,895.20
  4. Step 4: Simplify right side
    489,826.40x = 99,112,845,289.92
  5. Step 5: Solve for x
    x = 99,112,845,289.92/489,826.40
  6. Step 6: Final answer
    x = 202,342.80

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Similar ratio
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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.