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Finding the Fourth Proportional to 660,883.38, 912,021.49 and 359,077.38

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Solution

The fourth proportional to 660,883.38, 912,021.49 and 359,077.38 is: 495,528.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,883.38 : 912,021.49 = 359,077.38 : x
  2. Step 2: Convert to fraction form
    660,883.38/912,021.49 = 359,077.38/x
  3. Step 3: Cross multiply
    660,883.38x = 912,021.49 × 359,077.38
  4. Step 4: Simplify right side
    660,883.38x = 327,486,287,132.90
  5. Step 5: Solve for x
    x = 327,486,287,132.90/660,883.38
  6. Step 6: Final answer
    x = 495,528.10

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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.