Home / 724,229,749,311.32-999,458,373,021.10-399,089,985,452.72

Finding the Fourth Proportional to 724,229,749,311.32, 999,458,373,021.10 and 399,089,985,452.72

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Solution

The fourth proportional to 724,229,749,311.32, 999,458,373,021.10 and 399,089,985,452.72 is: 550,755,927,837.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,229,749,311.32 : 999,458,373,021.10 = 399,089,985,452.72 : x
  2. Step 2: Convert to fraction form
    724,229,749,311.32/999,458,373,021.10 = 399,089,985,452.72/x
  3. Step 3: Cross multiply
    724,229,749,311.32x = 999,458,373,021.10 × 399,089,985,452.72
  4. Step 4: Simplify right side
    724,229,749,311.32x = 398,873,827,549,589,954,101,248
  5. Step 5: Solve for x
    x = 398,873,827,549,589,954,101,248/724,229,749,311.32
  6. Step 6: Final answer
    x = 550,755,927,837.66

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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.