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Finding the Fourth Proportional to 665,300.07, 918,114.43 and 359,376.43

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Solution

The fourth proportional to 665,300.07, 918,114.43 and 359,376.43 is: 495,939.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,300.07 : 918,114.43 = 359,376.43 : x
  2. Step 2: Convert to fraction form
    665,300.07/918,114.43 = 359,376.43/x
  3. Step 3: Cross multiply
    665,300.07x = 918,114.43 × 359,376.43
  4. Step 4: Simplify right side
    665,300.07x = 329,948,688,480.17
  5. Step 5: Solve for x
    x = 329,948,688,480.17/665,300.07
  6. Step 6: Final answer
    x = 495,939.66

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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.