Home / 851,774,907.60-1,277,662,361.40-545,664,891.60

Finding the Fourth Proportional to 851,774,907.60, 1,277,662,361.40 and 545,664,891.60

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Solution

The fourth proportional to 851,774,907.60, 1,277,662,361.40 and 545,664,891.60 is: 818,497,337.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,774,907.60 : 1,277,662,361.40 = 545,664,891.60 : x
  2. Step 2: Convert to fraction form
    851,774,907.60/1,277,662,361.40 = 545,664,891.60/x
  3. Step 3: Cross multiply
    851,774,907.60x = 1,277,662,361.40 × 545,664,891.60
  4. Step 4: Simplify right side
    851,774,907.60x = 697,175,493,934,731,136
  5. Step 5: Solve for x
    x = 697,175,493,934,731,136/851,774,907.60
  6. Step 6: Final answer
    x = 818,497,337.40

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Double scale
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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.