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Finding the Fourth Proportional to 666,100.61, 919,224.03 and 367,743.71

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Solution

The fourth proportional to 666,100.61, 919,224.03 and 367,743.71 is: 507,489.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,100.61 : 919,224.03 = 367,743.71 : x
  2. Step 2: Convert to fraction form
    666,100.61/919,224.03 = 367,743.71/x
  3. Step 3: Cross multiply
    666,100.61x = 919,224.03 × 367,743.71
  4. Step 4: Simplify right side
    666,100.61x = 338,038,852,068.20
  5. Step 5: Solve for x
    x = 338,038,852,068.20/666,100.61
  6. Step 6: Final answer
    x = 507,489.18

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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.