Home / 820,425,293.72-1,132,005,913.54-485,731,625.12

Finding the Fourth Proportional to 820,425,293.72, 1,132,005,913.54 and 485,731,625.12

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Solution

The fourth proportional to 820,425,293.72, 1,132,005,913.54 and 485,731,625.12 is: 670,202,486.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,425,293.72 : 1,132,005,913.54 = 485,731,625.12 : x
  2. Step 2: Convert to fraction form
    820,425,293.72/1,132,005,913.54 = 485,731,625.12/x
  3. Step 3: Cross multiply
    820,425,293.72x = 1,132,005,913.54 × 485,731,625.12
  4. Step 4: Simplify right side
    820,425,293.72x = 549,851,072,029,234,368
  5. Step 5: Solve for x
    x = 549,851,072,029,234,368/820,425,293.72
  6. Step 6: Final answer
    x = 670,202,486.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.