Home / 479,393,312.40-661,374,539.64-278,415,974.52

Finding the Fourth Proportional to 479,393,312.40, 661,374,539.64 and 278,415,974.52

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Solution

The fourth proportional to 479,393,312.40, 661,374,539.64 and 278,415,974.52 is: 384,104,726.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,393,312.40 : 661,374,539.64 = 278,415,974.52 : x
  2. Step 2: Convert to fraction form
    479,393,312.40/661,374,539.64 = 278,415,974.52/x
  3. Step 3: Cross multiply
    479,393,312.40x = 661,374,539.64 × 278,415,974.52
  4. Step 4: Simplify right side
    479,393,312.40x = 184,137,236,976,586,944
  5. Step 5: Solve for x
    x = 184,137,236,976,586,944/479,393,312.40
  6. Step 6: Final answer
    x = 384,104,726.15

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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.