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Finding the Fourth Proportional to 660,031.44, 910,843.88 and 358,225.36

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Solution

The fourth proportional to 660,031.44, 910,843.88 and 358,225.36 is: 494,351.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,031.44 : 910,843.88 = 358,225.36 : x
  2. Step 2: Convert to fraction form
    660,031.44/910,843.88 = 358,225.36/x
  3. Step 3: Cross multiply
    660,031.44x = 910,843.88 × 358,225.36
  4. Step 4: Simplify right side
    660,031.44x = 326,287,376,816.80
  5. Step 5: Solve for x
    x = 326,287,376,816.80/660,031.44
  6. Step 6: Final answer
    x = 494,351.26

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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.