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Finding the Fourth Proportional to 660,953.25, 912,120.95 and 359,147.25

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Solution

The fourth proportional to 660,953.25, 912,120.95 and 359,147.25 is: 495,626.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,953.25 : 912,120.95 = 359,147.25 : x
  2. Step 2: Convert to fraction form
    660,953.25/912,120.95 = 359,147.25/x
  3. Step 3: Cross multiply
    660,953.25x = 912,120.95 × 359,147.25
  4. Step 4: Simplify right side
    660,953.25x = 327,585,731,757.76
  5. Step 5: Solve for x
    x = 327,585,731,757.76/660,953.25
  6. Step 6: Final answer
    x = 495,626.18

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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.