Home / 478,993,973.10-661,012,619.67-258,977,399.10

Finding the Fourth Proportional to 478,993,973.10, 661,012,619.67 and 258,977,399.10

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Solution

The fourth proportional to 478,993,973.10, 661,012,619.67 and 258,977,399.10 is: 357,389,317.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,993,973.10 : 661,012,619.67 = 258,977,399.10 : x
  2. Step 2: Convert to fraction form
    478,993,973.10/661,012,619.67 = 258,977,399.10/x
  3. Step 3: Cross multiply
    478,993,973.10x = 661,012,619.67 × 258,977,399.10
  4. Step 4: Simplify right side
    478,993,973.10x = 171,187,329,014,414,080
  5. Step 5: Solve for x
    x = 171,187,329,014,414,080/478,993,973.10
  6. Step 6: Final answer
    x = 357,389,317.25

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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.