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Finding the Fourth Proportional to 665,332.26, 918,159.03 and 359,408.58

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Solution

The fourth proportional to 665,332.26, 918,159.03 and 359,408.58 is: 495,984.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,332.26 : 918,159.03 = 359,408.58 : x
  2. Step 2: Convert to fraction form
    665,332.26/918,159.03 = 359,408.58/x
  3. Step 3: Cross multiply
    665,332.26x = 918,159.03 × 359,408.58
  4. Step 4: Simplify right side
    665,332.26x = 329,994,233,186.48
  5. Step 5: Solve for x
    x = 329,994,233,186.48/665,332.26
  6. Step 6: Final answer
    x = 495,984.12

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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.