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Finding the Fourth Proportional to 660,954.88, 912,123.20 and 359,148.88

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Solution

The fourth proportional to 660,954.88, 912,123.20 and 359,148.88 is: 495,628.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,954.88 : 912,123.20 = 359,148.88 : x
  2. Step 2: Convert to fraction form
    660,954.88/912,123.20 = 359,148.88/x
  3. Step 3: Cross multiply
    660,954.88x = 912,123.20 × 359,148.88
  4. Step 4: Simplify right side
    660,954.88x = 327,588,019,345.66
  5. Step 5: Solve for x
    x = 327,588,019,345.66/660,954.88
  6. Step 6: Final answer
    x = 495,628.42

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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.