Home / 642,301.20-963,451.80-193,091.40

Finding the Fourth Proportional to 642,301.20, 963,451.80 and 193,091.40

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Solution

The fourth proportional to 642,301.20, 963,451.80 and 193,091.40 is: 289,637.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,301.20 : 963,451.80 = 193,091.40 : x
  2. Step 2: Convert to fraction form
    642,301.20/963,451.80 = 193,091.40/x
  3. Step 3: Cross multiply
    642,301.20x = 963,451.80 × 193,091.40
  4. Step 4: Simplify right side
    642,301.20x = 186,034,256,894.52
  5. Step 5: Solve for x
    x = 186,034,256,894.52/642,301.20
  6. Step 6: Final answer
    x = 289,637.10

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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.