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Finding the Fourth Proportional to 659,041.71, 909,516.78 and 372,588.45

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Solution

The fourth proportional to 659,041.71, 909,516.78 and 372,588.45 is: 514,194.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,041.71 : 909,516.78 = 372,588.45 : x
  2. Step 2: Convert to fraction form
    659,041.71/909,516.78 = 372,588.45/x
  3. Step 3: Cross multiply
    659,041.71x = 909,516.78 × 372,588.45
  4. Step 4: Simplify right side
    659,041.71x = 338,875,447,309.19
  5. Step 5: Solve for x
    x = 338,875,447,309.19/659,041.71
  6. Step 6: Final answer
    x = 514,194.23

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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.