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Finding the Fourth Proportional to 713,637,756.71, 984,740,228.98 and 396,111,387.69

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Solution

The fourth proportional to 713,637,756.71, 984,740,228.98 and 396,111,387.69 is: 546,589,379.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,637,756.71 : 984,740,228.98 = 396,111,387.69 : x
  2. Step 2: Convert to fraction form
    713,637,756.71/984,740,228.98 = 396,111,387.69/x
  3. Step 3: Cross multiply
    713,637,756.71x = 984,740,228.98 × 396,111,387.69
  4. Step 4: Simplify right side
    713,637,756.71x = 390,066,818,615,436,160
  5. Step 5: Solve for x
    x = 390,066,818,615,436,160/713,637,756.71
  6. Step 6: Final answer
    x = 546,589,379.48

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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.