Home / 858,071.16-1,287,182.39-318,333.69

Finding the Fourth Proportional to 858,071.16, 1,287,182.39 and 318,333.69

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Solution

The fourth proportional to 858,071.16, 1,287,182.39 and 318,333.69 is: 477,528.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,071.16 : 1,287,182.39 = 318,333.69 : x
  2. Step 2: Convert to fraction form
    858,071.16/1,287,182.39 = 318,333.69/x
  3. Step 3: Cross multiply
    858,071.16x = 1,287,182.39 × 318,333.69
  4. Step 4: Simplify right side
    858,071.16x = 409,753,519,911.72
  5. Step 5: Solve for x
    x = 409,753,519,911.72/858,071.16
  6. Step 6: Final answer
    x = 477,528.60

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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.