Home / 1,138,028.51-1,570,461-621,771.31

Finding the Fourth Proportional to 1,138,028.51, 1,570,461 and 621,771.31

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Solution

The fourth proportional to 1,138,028.51, 1,570,461 and 621,771.31 is: 858,034.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,028.51 : 1,570,461 = 621,771.31 : x
  2. Step 2: Convert to fraction form
    1,138,028.51/1,570,461 = 621,771.31/x
  3. Step 3: Cross multiply
    1,138,028.51x = 1,570,461 × 621,771.31
  4. Step 4: Simplify right side
    1,138,028.51x = 976,467,585,421.61
  5. Step 5: Solve for x
    x = 976,467,585,421.61/1,138,028.51
  6. Step 6: Final answer
    x = 858,034.38

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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.