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Finding the Fourth Proportional to 661,060.92, 912,273.90 and 359,255.16

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Solution

The fourth proportional to 661,060.92, 912,273.90 and 359,255.16 is: 495,777.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,060.92 : 912,273.90 = 359,255.16 : x
  2. Step 2: Convert to fraction form
    661,060.92/912,273.90 = 359,255.16/x
  3. Step 3: Cross multiply
    661,060.92x = 912,273.90 × 359,255.16
  4. Step 4: Simplify right side
    661,060.92x = 327,739,105,908.32
  5. Step 5: Solve for x
    x = 327,739,105,908.32/661,060.92
  6. Step 6: Final answer
    x = 495,777.46

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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.