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Finding the Fourth Proportional to 660,863.68, 989,150.81 and 356,835.17

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Solution

The fourth proportional to 660,863.68, 989,150.81 and 356,835.17 is: 534,094.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,863.68 : 989,150.81 = 356,835.17 : x
  2. Step 2: Convert to fraction form
    660,863.68/989,150.81 = 356,835.17/x
  3. Step 3: Cross multiply
    660,863.68x = 989,150.81 × 356,835.17
  4. Step 4: Simplify right side
    660,863.68x = 352,963,798,130.69
  5. Step 5: Solve for x
    x = 352,963,798,130.69/660,863.68
  6. Step 6: Final answer
    x = 534,094.72

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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.