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Finding the Fourth Proportional to 909,709.07, 1,364,726.99 and 310,530.11

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Solution

The fourth proportional to 909,709.07, 1,364,726.99 and 310,530.11 is: 465,850.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,709.07 : 1,364,726.99 = 310,530.11 : x
  2. Step 2: Convert to fraction form
    909,709.07/1,364,726.99 = 310,530.11/x
  3. Step 3: Cross multiply
    909,709.07x = 1,364,726.99 × 310,530.11
  4. Step 4: Simplify right side
    909,709.07x = 423,788,816,277.36
  5. Step 5: Solve for x
    x = 423,788,816,277.36/909,709.07
  6. Step 6: Final answer
    x = 465,850.93

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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.