Home / 559,873,999.20-839,810,998.80-421,921,538.40

Finding the Fourth Proportional to 559,873,999.20, 839,810,998.80 and 421,921,538.40

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Solution

The fourth proportional to 559,873,999.20, 839,810,998.80 and 421,921,538.40 is: 632,882,307.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,873,999.20 : 839,810,998.80 = 421,921,538.40 : x
  2. Step 2: Convert to fraction form
    559,873,999.20/839,810,998.80 = 421,921,538.40/x
  3. Step 3: Cross multiply
    559,873,999.20x = 839,810,998.80 × 421,921,538.40
  4. Step 4: Simplify right side
    559,873,999.20x = 354,334,348,578,936,512
  5. Step 5: Solve for x
    x = 354,334,348,578,936,512/559,873,999.20
  6. Step 6: Final answer
    x = 632,882,307.60

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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.