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Finding the Fourth Proportional to 659,940.36, 910,718.34 and 358,134.36

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Solution

The fourth proportional to 659,940.36, 910,718.34 and 358,134.36 is: 494,225.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,940.36 : 910,718.34 = 358,134.36 : x
  2. Step 2: Convert to fraction form
    659,940.36/910,718.34 = 358,134.36/x
  3. Step 3: Cross multiply
    659,940.36x = 910,718.34 × 358,134.36
  4. Step 4: Simplify right side
    659,940.36x = 326,159,529,836.16
  5. Step 5: Solve for x
    x = 326,159,529,836.16/659,940.36
  6. Step 6: Final answer
    x = 494,225.77

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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.