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Finding the Fourth Proportional to 738,963,545.28, 1,019,772,395.64 and 399,872,022

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Solution

The fourth proportional to 738,963,545.28, 1,019,772,395.64 and 399,872,022 is: 551,824,853.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,963,545.28 : 1,019,772,395.64 = 399,872,022 : x
  2. Step 2: Convert to fraction form
    738,963,545.28/1,019,772,395.64 = 399,872,022/x
  3. Step 3: Cross multiply
    738,963,545.28x = 1,019,772,395.64 × 399,872,022
  4. Step 4: Simplify right side
    738,963,545.28x = 407,778,449,824,350,784
  5. Step 5: Solve for x
    x = 407,778,449,824,350,784/738,963,545.28
  6. Step 6: Final answer
    x = 551,824,853.11

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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.