Home / 711,074.40-1,067,302.80-431,138.40

Finding the Fourth Proportional to 711,074.40, 1,067,302.80 and 431,138.40

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Solution

The fourth proportional to 711,074.40, 1,067,302.80 and 431,138.40 is: 647,126.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,074.40 : 1,067,302.80 = 431,138.40 : x
  2. Step 2: Convert to fraction form
    711,074.40/1,067,302.80 = 431,138.40/x
  3. Step 3: Cross multiply
    711,074.40x = 1,067,302.80 × 431,138.40
  4. Step 4: Simplify right side
    711,074.40x = 460,155,221,507.52
  5. Step 5: Solve for x
    x = 460,155,221,507.52/711,074.40
  6. Step 6: Final answer
    x = 647,126.69

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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.