Home / 812,870.03-1,121,760.69-450,317.39

Finding the Fourth Proportional to 812,870.03, 1,121,760.69 and 450,317.39

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Solution

The fourth proportional to 812,870.03, 1,121,760.69 and 450,317.39 is: 621,438.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,870.03 : 1,121,760.69 = 450,317.39 : x
  2. Step 2: Convert to fraction form
    812,870.03/1,121,760.69 = 450,317.39/x
  3. Step 3: Cross multiply
    812,870.03x = 1,121,760.69 × 450,317.39
  4. Step 4: Simplify right side
    812,870.03x = 505,148,346,125.40
  5. Step 5: Solve for x
    x = 505,148,346,125.40/812,870.03
  6. Step 6: Final answer
    x = 621,438.03

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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.