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Finding the Fourth Proportional to 660,893.42, 912,035.28 and 359,087.42

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Solution

The fourth proportional to 660,893.42, 912,035.28 and 359,087.42 is: 495,541.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,893.42 : 912,035.28 = 359,087.42 : x
  2. Step 2: Convert to fraction form
    660,893.42/912,035.28 = 359,087.42/x
  3. Step 3: Cross multiply
    660,893.42x = 912,035.28 × 359,087.42
  4. Step 4: Simplify right side
    660,893.42x = 327,500,395,644.18
  5. Step 5: Solve for x
    x = 327,500,395,644.18/660,893.42
  6. Step 6: Final answer
    x = 495,541.92

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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.