Home / 642,260.40-963,390.60-404,833.20

Finding the Fourth Proportional to 642,260.40, 963,390.60 and 404,833.20

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Solution

The fourth proportional to 642,260.40, 963,390.60 and 404,833.20 is: 607,249.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,260.40 : 963,390.60 = 404,833.20 : x
  2. Step 2: Convert to fraction form
    642,260.40/963,390.60 = 404,833.20/x
  3. Step 3: Cross multiply
    642,260.40x = 963,390.60 × 404,833.20
  4. Step 4: Simplify right side
    642,260.40x = 390,012,499,447.92
  5. Step 5: Solve for x
    x = 390,012,499,447.92/642,260.40
  6. Step 6: Final answer
    x = 607,249.80

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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.