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Finding the Fourth Proportional to 586,477,659.12, 879,907,583.88 and 279,729,855.60

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Solution

The fourth proportional to 586,477,659.12, 879,907,583.88 and 279,729,855.60 is: 419,685,929.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,477,659.12 : 879,907,583.88 = 279,729,855.60 : x
  2. Step 2: Convert to fraction form
    586,477,659.12/879,907,583.88 = 279,729,855.60/x
  3. Step 3: Cross multiply
    586,477,659.12x = 879,907,583.88 × 279,729,855.60
  4. Step 4: Simplify right side
    586,477,659.12x = 246,136,421,380,097,312
  5. Step 5: Solve for x
    x = 246,136,421,380,097,312/586,477,659.12
  6. Step 6: Final answer
    x = 419,685,929.30

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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.