Home / 1,105,319.40-1,658,853.90-431,723.40

Finding the Fourth Proportional to 1,105,319.40, 1,658,853.90 and 431,723.40

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Solution

The fourth proportional to 1,105,319.40, 1,658,853.90 and 431,723.40 is: 647,926.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,105,319.40 : 1,658,853.90 = 431,723.40 : x
  2. Step 2: Convert to fraction form
    1,105,319.40/1,658,853.90 = 431,723.40/x
  3. Step 3: Cross multiply
    1,105,319.40x = 1,658,853.90 × 431,723.40
  4. Step 4: Simplify right side
    1,105,319.40x = 716,166,045,811.26
  5. Step 5: Solve for x
    x = 716,166,045,811.26/1,105,319.40
  6. Step 6: Final answer
    x = 647,926.79

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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.