Home / 407,084,920.48-561,776,765.07-221,445,493.30

Finding the Fourth Proportional to 407,084,920.48, 561,776,765.07 and 221,445,493.30

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Solution

The fourth proportional to 407,084,920.48, 561,776,765.07 and 221,445,493.30 is: 305,594,549.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,084,920.48 : 561,776,765.07 = 221,445,493.30 : x
  2. Step 2: Convert to fraction form
    407,084,920.48/561,776,765.07 = 221,445,493.30/x
  3. Step 3: Cross multiply
    407,084,920.48x = 561,776,765.07 × 221,445,493.30
  4. Step 4: Simplify right side
    407,084,920.48x = 124,402,932,865,404,384
  5. Step 5: Solve for x
    x = 124,402,932,865,404,384/407,084,920.48
  6. Step 6: Final answer
    x = 305,594,549.46

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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.