Home / 856,720.80-1,282,316.40-790,365.60

Finding the Fourth Proportional to 856,720.80, 1,282,316.40 and 790,365.60

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Solution

The fourth proportional to 856,720.80, 1,282,316.40 and 790,365.60 is: 1,182,997.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,720.80 : 1,282,316.40 = 790,365.60 : x
  2. Step 2: Convert to fraction form
    856,720.80/1,282,316.40 = 790,365.60/x
  3. Step 3: Cross multiply
    856,720.80x = 1,282,316.40 × 790,365.60
  4. Step 4: Simplify right side
    856,720.80x = 1,013,498,770,875.84
  5. Step 5: Solve for x
    x = 1,013,498,770,875.84/856,720.80
  6. Step 6: Final answer
    x = 1,182,997.74

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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.