Home / 858,143.40-1,287,215.10-818,777.40

Finding the Fourth Proportional to 858,143.40, 1,287,215.10 and 818,777.40

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Solution

The fourth proportional to 858,143.40, 1,287,215.10 and 818,777.40 is: 1,228,166.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,143.40 : 1,287,215.10 = 818,777.40 : x
  2. Step 2: Convert to fraction form
    858,143.40/1,287,215.10 = 818,777.40/x
  3. Step 3: Cross multiply
    858,143.40x = 1,287,215.10 × 818,777.40
  4. Step 4: Simplify right side
    858,143.40x = 1,053,942,632,818.74
  5. Step 5: Solve for x
    x = 1,053,942,632,818.74/858,143.40
  6. Step 6: Final answer
    x = 1,228,166.10

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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.