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Finding the Fourth Proportional to 658,615.51, 908,889.15 and 356,809.51

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Solution

The fourth proportional to 658,615.51, 908,889.15 and 356,809.51 is: 492,396.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,615.51 : 908,889.15 = 356,809.51 : x
  2. Step 2: Convert to fraction form
    658,615.51/908,889.15 = 356,809.51/x
  3. Step 3: Cross multiply
    658,615.51x = 908,889.15 × 356,809.51
  4. Step 4: Simplify right side
    658,615.51x = 324,300,292,255.82
  5. Step 5: Solve for x
    x = 324,300,292,255.82/658,615.51
  6. Step 6: Final answer
    x = 492,396.99

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1.5x scale

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.