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Finding the Fourth Proportional to 1,316,768.82, 1,975,208.12 and 642,046.52

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Solution

The fourth proportional to 1,316,768.82, 1,975,208.12 and 642,046.52 is: 963,096.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316,768.82 : 1,975,208.12 = 642,046.52 : x
  2. Step 2: Convert to fraction form
    1,316,768.82/1,975,208.12 = 642,046.52/x
  3. Step 3: Cross multiply
    1,316,768.82x = 1,975,208.12 × 642,046.52
  4. Step 4: Simplify right side
    1,316,768.82x = 1,268,175,486,635.47
  5. Step 5: Solve for x
    x = 1,268,175,486,635.47/1,316,768.82
  6. Step 6: Final answer
    x = 963,096.53

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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.