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Finding the Fourth Proportional to 559,872,072.30, 839,808,108.45 and 512,254,958.70

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Solution

The fourth proportional to 559,872,072.30, 839,808,108.45 and 512,254,958.70 is: 768,382,438.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,872,072.30 : 839,808,108.45 = 512,254,958.70 : x
  2. Step 2: Convert to fraction form
    559,872,072.30/839,808,108.45 = 512,254,958.70/x
  3. Step 3: Cross multiply
    559,872,072.30x = 839,808,108.45 × 512,254,958.70
  4. Step 4: Simplify right side
    559,872,072.30x = 430,195,867,909,979,904
  5. Step 5: Solve for x
    x = 430,195,867,909,979,904/559,872,072.30
  6. Step 6: Final answer
    x = 768,382,438.05

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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.