Home / 1,170,380.17-1,615,256-661,115.35

Finding the Fourth Proportional to 1,170,380.17, 1,615,256 and 661,115.35

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Solution

The fourth proportional to 1,170,380.17, 1,615,256 and 661,115.35 is: 912,413.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,170,380.17 : 1,615,256 = 661,115.35 : x
  2. Step 2: Convert to fraction form
    1,170,380.17/1,615,256 = 661,115.35/x
  3. Step 3: Cross multiply
    1,170,380.17x = 1,615,256 × 661,115.35
  4. Step 4: Simplify right side
    1,170,380.17x = 1,067,870,535,779.60
  5. Step 5: Solve for x
    x = 1,067,870,535,779.60/1,170,380.17
  6. Step 6: Final answer
    x = 912,413.39

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.