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Finding the Fourth Proportional to 713,206.43, 984,249.26 and 390,916.45

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Solution

The fourth proportional to 713,206.43, 984,249.26 and 390,916.45 is: 539,478.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,206.43 : 984,249.26 = 390,916.45 : x
  2. Step 2: Convert to fraction form
    713,206.43/984,249.26 = 390,916.45/x
  3. Step 3: Cross multiply
    713,206.43x = 984,249.26 × 390,916.45
  4. Step 4: Simplify right side
    713,206.43x = 384,759,226,634.33
  5. Step 5: Solve for x
    x = 384,759,226,634.33/713,206.43
  6. Step 6: Final answer
    x = 539,478.07

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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.