Home / 478,993,974.10-661,012,621.05-258,977,400.10

Finding the Fourth Proportional to 478,993,974.10, 661,012,621.05 and 258,977,400.10

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Solution

The fourth proportional to 478,993,974.10, 661,012,621.05 and 258,977,400.10 is: 357,389,318.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,993,974.10 : 661,012,621.05 = 258,977,400.10 : x
  2. Step 2: Convert to fraction form
    478,993,974.10/661,012,621.05 = 258,977,400.10/x
  3. Step 3: Cross multiply
    478,993,974.10x = 661,012,621.05 × 258,977,400.10
  4. Step 4: Simplify right side
    478,993,974.10x = 171,187,330,032,815,520
  5. Step 5: Solve for x
    x = 171,187,330,032,815,520/478,993,974.10
  6. Step 6: Final answer
    x = 357,389,318.63

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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.