Home / 712,529,516.57-983,290,717.25-394,988,957.84

Finding the Fourth Proportional to 712,529,516.57, 983,290,717.25 and 394,988,957.84

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Solution

The fourth proportional to 712,529,516.57, 983,290,717.25 and 394,988,957.84 is: 545,084,753.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,529,516.57 : 983,290,717.25 = 394,988,957.84 : x
  2. Step 2: Convert to fraction form
    712,529,516.57/983,290,717.25 = 394,988,957.84/x
  3. Step 3: Cross multiply
    712,529,516.57x = 983,290,717.25 × 394,988,957.84
  4. Step 4: Simplify right side
    712,529,516.57x = 388,388,975,663,769,280
  5. Step 5: Solve for x
    x = 388,388,975,663,769,280/712,529,516.57
  6. Step 6: Final answer
    x = 545,084,753.17

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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.