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Finding the Fourth Proportional to 1,065,786.90, 1,597,319.55 and 433,986.90

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Solution

The fourth proportional to 1,065,786.90, 1,597,319.55 and 433,986.90 is: 650,426.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,065,786.90 : 1,597,319.55 = 433,986.90 : x
  2. Step 2: Convert to fraction form
    1,065,786.90/1,597,319.55 = 433,986.90/x
  3. Step 3: Cross multiply
    1,065,786.90x = 1,597,319.55 × 433,986.90
  4. Step 4: Simplify right side
    1,065,786.90x = 693,215,759,813.90
  5. Step 5: Solve for x
    x = 693,215,759,813.90/1,065,786.90
  6. Step 6: Final answer
    x = 650,426.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.