Home / 715,880.44-1,072,387.14-431,412.76

Finding the Fourth Proportional to 715,880.44, 1,072,387.14 and 431,412.76

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Solution

The fourth proportional to 715,880.44, 1,072,387.14 and 431,412.76 is: 646,255.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,880.44 : 1,072,387.14 = 431,412.76 : x
  2. Step 2: Convert to fraction form
    715,880.44/1,072,387.14 = 431,412.76/x
  3. Step 3: Cross multiply
    715,880.44x = 1,072,387.14 × 431,412.76
  4. Step 4: Simplify right side
    715,880.44x = 462,641,495,855.91
  5. Step 5: Solve for x
    x = 462,641,495,855.91/715,880.44
  6. Step 6: Final answer
    x = 646,255.25

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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.