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Finding the Fourth Proportional to 665,099.93, 917,837.90 and 359,176.30

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Solution

The fourth proportional to 665,099.93, 917,837.90 and 359,176.30 is: 495,663.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,099.93 : 917,837.90 = 359,176.30 : x
  2. Step 2: Convert to fraction form
    665,099.93/917,837.90 = 359,176.30/x
  3. Step 3: Cross multiply
    665,099.93x = 917,837.90 × 359,176.30
  4. Step 4: Simplify right side
    665,099.93x = 329,665,620,921.77
  5. Step 5: Solve for x
    x = 329,665,620,921.77/665,099.93
  6. Step 6: Final answer
    x = 495,663.29

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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.