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Finding the Fourth Proportional to 659,897.07, 990,220.02 and 356,287.16

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Solution

The fourth proportional to 659,897.07, 990,220.02 and 356,287.16 is: 534,632.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,897.07 : 990,220.02 = 356,287.16 : x
  2. Step 2: Convert to fraction form
    659,897.07/990,220.02 = 356,287.16/x
  3. Step 3: Cross multiply
    659,897.07x = 990,220.02 × 356,287.16
  4. Step 4: Simplify right side
    659,897.07x = 352,802,673,749.84
  5. Step 5: Solve for x
    x = 352,802,673,749.84/659,897.07
  6. Step 6: Final answer
    x = 534,632.88

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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.