Home / 818,370.81-1,129,386.92-455,794.83

Finding the Fourth Proportional to 818,370.81, 1,129,386.92 and 455,794.83

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Solution

The fourth proportional to 818,370.81, 1,129,386.92 and 455,794.83 is: 629,016.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,370.81 : 1,129,386.92 = 455,794.83 : x
  2. Step 2: Convert to fraction form
    818,370.81/1,129,386.92 = 455,794.83/x
  3. Step 3: Cross multiply
    818,370.81x = 1,129,386.92 × 455,794.83
  4. Step 4: Simplify right side
    818,370.81x = 514,768,716,926.65
  5. Step 5: Solve for x
    x = 514,768,716,926.65/818,370.81
  6. Step 6: Final answer
    x = 629,016.47

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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.