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Finding the Fourth Proportional to 559,873,019.20, 839,809,528.80 and 528,128,276.80

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Solution

The fourth proportional to 559,873,019.20, 839,809,528.80 and 528,128,276.80 is: 792,192,415.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,873,019.20 : 839,809,528.80 = 528,128,276.80 : x
  2. Step 2: Convert to fraction form
    559,873,019.20/839,809,528.80 = 528,128,276.80/x
  3. Step 3: Cross multiply
    559,873,019.20x = 839,809,528.80 × 528,128,276.80
  4. Step 4: Simplify right side
    559,873,019.20x = 443,527,159,285,363,968
  5. Step 5: Solve for x
    x = 443,527,159,285,363,968/559,873,019.20
  6. Step 6: Final answer
    x = 792,192,415.20

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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.