Home / 921,943.78-1,272,189.45-514,007.26

Finding the Fourth Proportional to 921,943.78, 1,272,189.45 and 514,007.26

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Solution

The fourth proportional to 921,943.78, 1,272,189.45 and 514,007.26 is: 709,278.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,943.78 : 1,272,189.45 = 514,007.26 : x
  2. Step 2: Convert to fraction form
    921,943.78/1,272,189.45 = 514,007.26/x
  3. Step 3: Cross multiply
    921,943.78x = 1,272,189.45 × 514,007.26
  4. Step 4: Simplify right side
    921,943.78x = 653,914,613,395.41
  5. Step 5: Solve for x
    x = 653,914,613,395.41/921,943.78
  6. Step 6: Final answer
    x = 709,278.19

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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.