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Finding the Fourth Proportional to 640,843.36, 884,368.40 and 350,456.24

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Solution

The fourth proportional to 640,843.36, 884,368.40 and 350,456.24 is: 483,632.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,843.36 : 884,368.40 = 350,456.24 : x
  2. Step 2: Convert to fraction form
    640,843.36/884,368.40 = 350,456.24/x
  3. Step 3: Cross multiply
    640,843.36x = 884,368.40 × 350,456.24
  4. Step 4: Simplify right side
    640,843.36x = 309,932,424,238.82
  5. Step 5: Solve for x
    x = 309,932,424,238.82/640,843.36
  6. Step 6: Final answer
    x = 483,632.11

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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.