Home / 1,138,320.72-1,570,905.12-622,106.55

Finding the Fourth Proportional to 1,138,320.72, 1,570,905.12 and 622,106.55

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Solution

The fourth proportional to 1,138,320.72, 1,570,905.12 and 622,106.55 is: 858,519.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,320.72 : 1,570,905.12 = 622,106.55 : x
  2. Step 2: Convert to fraction form
    1,138,320.72/1,570,905.12 = 622,106.55/x
  3. Step 3: Cross multiply
    1,138,320.72x = 1,570,905.12 × 622,106.55
  4. Step 4: Simplify right side
    1,138,320.72x = 977,270,364,580.54
  5. Step 5: Solve for x
    x = 977,270,364,580.54/1,138,320.72
  6. Step 6: Final answer
    x = 858,519.35

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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.