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Finding the Fourth Proportional to 713,249.69, 984,280.11 and 390,973.37

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Solution

The fourth proportional to 713,249.69, 984,280.11 and 390,973.37 is: 539,540.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,249.69 : 984,280.11 = 390,973.37 : x
  2. Step 2: Convert to fraction form
    713,249.69/984,280.11 = 390,973.37/x
  3. Step 3: Cross multiply
    713,249.69x = 984,280.11 × 390,973.37
  4. Step 4: Simplify right side
    713,249.69x = 384,827,305,243.12
  5. Step 5: Solve for x
    x = 384,827,305,243.12/713,249.69
  6. Step 6: Final answer
    x = 539,540.80

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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.