Home / 476,470,135.40-714,705,203.10-428,097,194.60

Finding the Fourth Proportional to 476,470,135.40, 714,705,203.10 and 428,097,194.60

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Solution

The fourth proportional to 476,470,135.40, 714,705,203.10 and 428,097,194.60 is: 642,145,791.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,470,135.40 : 714,705,203.10 = 428,097,194.60 : x
  2. Step 2: Convert to fraction form
    476,470,135.40/714,705,203.10 = 428,097,194.60/x
  3. Step 3: Cross multiply
    476,470,135.40x = 714,705,203.10 × 428,097,194.60
  4. Step 4: Simplify right side
    476,470,135.40x = 305,963,292,413,133,248
  5. Step 5: Solve for x
    x = 305,963,292,413,133,248/476,470,135.40
  6. Step 6: Final answer
    x = 642,145,791.90

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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.