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Finding the Fourth Proportional to 659,280.06, 909,824.40 and 372,843

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Solution

The fourth proportional to 659,280.06, 909,824.40 and 372,843 is: 514,533.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,280.06 : 909,824.40 = 372,843 : x
  2. Step 2: Convert to fraction form
    659,280.06/909,824.40 = 372,843/x
  3. Step 3: Cross multiply
    659,280.06x = 909,824.40 × 372,843
  4. Step 4: Simplify right side
    659,280.06x = 339,221,658,769.20
  5. Step 5: Solve for x
    x = 339,221,658,769.20/659,280.06
  6. Step 6: Final answer
    x = 514,533.47

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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.