Home / 646,238.19-891,228.15-404,542.80

Finding the Fourth Proportional to 646,238.19, 891,228.15 and 404,542.80

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Solution

The fourth proportional to 646,238.19, 891,228.15 and 404,542.80 is: 557,905.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,238.19 : 891,228.15 = 404,542.80 : x
  2. Step 2: Convert to fraction form
    646,238.19/891,228.15 = 404,542.80/x
  3. Step 3: Cross multiply
    646,238.19x = 891,228.15 × 404,542.80
  4. Step 4: Simplify right side
    646,238.19x = 360,539,931,239.82
  5. Step 5: Solve for x
    x = 360,539,931,239.82/646,238.19
  6. Step 6: Final answer
    x = 557,905.64

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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.