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Finding the Fourth Proportional to 713,637,757.71, 984,740,230.36 and 396,111,388.69

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Solution

The fourth proportional to 713,637,757.71, 984,740,230.36 and 396,111,388.69 is: 546,589,380.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,637,757.71 : 984,740,230.36 = 396,111,388.69 : x
  2. Step 2: Convert to fraction form
    713,637,757.71/984,740,230.36 = 396,111,388.69/x
  3. Step 3: Cross multiply
    713,637,757.71x = 984,740,230.36 × 396,111,388.69
  4. Step 4: Simplify right side
    713,637,757.71x = 390,066,820,146,810,112
  5. Step 5: Solve for x
    x = 390,066,820,146,810,112/713,637,757.71
  6. Step 6: Final answer
    x = 546,589,380.86

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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.