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Finding the Fourth Proportional to 660,018.22, 910,819.80 and 358,212.22

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Solution

The fourth proportional to 660,018.22, 910,819.80 and 358,212.22 is: 494,329.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,018.22 : 910,819.80 = 358,212.22 : x
  2. Step 2: Convert to fraction form
    660,018.22/910,819.80 = 358,212.22/x
  3. Step 3: Cross multiply
    660,018.22x = 910,819.80 × 358,212.22
  4. Step 4: Simplify right side
    660,018.22x = 326,266,782,577.96
  5. Step 5: Solve for x
    x = 326,266,782,577.96/660,018.22
  6. Step 6: Final answer
    x = 494,329.96

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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.