Home / 858,069.91-1,287,180.51-318,332.44

Finding the Fourth Proportional to 858,069.91, 1,287,180.51 and 318,332.44

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Solution

The fourth proportional to 858,069.91, 1,287,180.51 and 318,332.44 is: 477,526.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,069.91 : 1,287,180.51 = 318,332.44 : x
  2. Step 2: Convert to fraction form
    858,069.91/1,287,180.51 = 318,332.44/x
  3. Step 3: Cross multiply
    858,069.91x = 1,287,180.51 × 318,332.44
  4. Step 4: Simplify right side
    858,069.91x = 409,751,312,468.74
  5. Step 5: Solve for x
    x = 409,751,312,468.74/858,069.91
  6. Step 6: Final answer
    x = 477,526.72

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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.