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Finding the Fourth Proportional to 713,197.31, 984,210.24 and 390,906.41

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Solution

The fourth proportional to 713,197.31, 984,210.24 and 390,906.41 is: 539,449.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,197.31 : 984,210.24 = 390,906.41 : x
  2. Step 2: Convert to fraction form
    713,197.31/984,210.24 = 390,906.41/x
  3. Step 3: Cross multiply
    713,197.31x = 984,210.24 × 390,906.41
  4. Step 4: Simplify right side
    713,197.31x = 384,734,091,603.64
  5. Step 5: Solve for x
    x = 384,734,091,603.64/713,197.31
  6. Step 6: Final answer
    x = 539,449.72

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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.