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Finding the Fourth Proportional to 660,950.32, 912,117.21 and 359,144.32

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Solution

The fourth proportional to 660,950.32, 912,117.21 and 359,144.32 is: 495,622.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,950.32 : 912,117.21 = 359,144.32 : x
  2. Step 2: Convert to fraction form
    660,950.32/912,117.21 = 359,144.32/x
  3. Step 3: Cross multiply
    660,950.32x = 912,117.21 × 359,144.32
  4. Step 4: Simplify right side
    660,950.32x = 327,581,715,145.75
  5. Step 5: Solve for x
    x = 327,581,715,145.75/660,950.32
  6. Step 6: Final answer
    x = 495,622.30

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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.