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Finding the Fourth Proportional to 656,612.40, 906,131.16 and 370,107.12

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Solution

The fourth proportional to 656,612.40, 906,131.16 and 370,107.12 is: 510,751.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,612.40 : 906,131.16 = 370,107.12 : x
  2. Step 2: Convert to fraction form
    656,612.40/906,131.16 = 370,107.12/x
  3. Step 3: Cross multiply
    656,612.40x = 906,131.16 × 370,107.12
  4. Step 4: Simplify right side
    656,612.40x = 335,365,593,969.86
  5. Step 5: Solve for x
    x = 335,365,593,969.86/656,612.40
  6. Step 6: Final answer
    x = 510,751.23

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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.