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Finding the Fourth Proportional to 660,022.13, 910,830.60 and 358,216.13

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Solution

The fourth proportional to 660,022.13, 910,830.60 and 358,216.13 is: 494,338.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,022.13 : 910,830.60 = 358,216.13 : x
  2. Step 2: Convert to fraction form
    660,022.13/910,830.60 = 358,216.13/x
  3. Step 3: Cross multiply
    660,022.13x = 910,830.60 × 358,216.13
  4. Step 4: Simplify right side
    660,022.13x = 326,274,208,063.43
  5. Step 5: Solve for x
    x = 326,274,208,063.43/660,022.13
  6. Step 6: Final answer
    x = 494,338.29

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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.