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Finding the Fourth Proportional to 659,148.13, 909,708.09 and 368,775.89

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Solution

The fourth proportional to 659,148.13, 909,708.09 and 368,775.89 is: 508,957.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,148.13 : 909,708.09 = 368,775.89 : x
  2. Step 2: Convert to fraction form
    659,148.13/909,708.09 = 368,775.89/x
  3. Step 3: Cross multiply
    659,148.13x = 909,708.09 × 368,775.89
  4. Step 4: Simplify right side
    659,148.13x = 335,478,409,047.09
  5. Step 5: Solve for x
    x = 335,478,409,047.09/659,148.13
  6. Step 6: Final answer
    x = 508,957.54

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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.