Home / 624,279,809.80-935,411,945.10-393,836,494.60

Finding the Fourth Proportional to 624,279,809.80, 935,411,945.10 and 393,836,494.60

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Solution

The fourth proportional to 624,279,809.80, 935,411,945.10 and 393,836,494.60 is: 590,118,974.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,279,809.80 : 935,411,945.10 = 393,836,494.60 : x
  2. Step 2: Convert to fraction form
    624,279,809.80/935,411,945.10 = 393,836,494.60/x
  3. Step 3: Cross multiply
    624,279,809.80x = 935,411,945.10 × 393,836,494.60
  4. Step 4: Simplify right side
    624,279,809.80x = 368,399,361,465,151,680
  5. Step 5: Solve for x
    x = 368,399,361,465,151,680/624,279,809.80
  6. Step 6: Final answer
    x = 590,118,974.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.