Home / 921,987.78-1,272,337.92-514,094.51

Finding the Fourth Proportional to 921,987.78, 1,272,337.92 and 514,094.51

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Solution

The fourth proportional to 921,987.78, 1,272,337.92 and 514,094.51 is: 709,447.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,987.78 : 1,272,337.92 = 514,094.51 : x
  2. Step 2: Convert to fraction form
    921,987.78/1,272,337.92 = 514,094.51/x
  3. Step 3: Cross multiply
    921,987.78x = 1,272,337.92 × 514,094.51
  4. Step 4: Simplify right side
    921,987.78x = 654,101,933,175.13
  5. Step 5: Solve for x
    x = 654,101,933,175.13/921,987.78
  6. Step 6: Final answer
    x = 709,447.51

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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.