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Finding the Fourth Proportional to 660,265.68, 990,018.72 and 352,137.56

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Solution

The fourth proportional to 660,265.68, 990,018.72 and 352,137.56 is: 528,003.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,265.68 : 990,018.72 = 352,137.56 : x
  2. Step 2: Convert to fraction form
    660,265.68/990,018.72 = 352,137.56/x
  3. Step 3: Cross multiply
    660,265.68x = 990,018.72 × 352,137.56
  4. Step 4: Simplify right side
    660,265.68x = 348,622,776,415.12
  5. Step 5: Solve for x
    x = 348,622,776,415.12/660,265.68
  6. Step 6: Final answer
    x = 528,003.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.