Home / 407,085,014.64-561,776,895.12-221,445,587.52

Finding the Fourth Proportional to 407,085,014.64, 561,776,895.12 and 221,445,587.52

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Solution

The fourth proportional to 407,085,014.64, 561,776,895.12 and 221,445,587.52 is: 305,594,679.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,085,014.64 : 561,776,895.12 = 221,445,587.52 : x
  2. Step 2: Convert to fraction form
    407,085,014.64/561,776,895.12 = 221,445,587.52/x
  3. Step 3: Cross multiply
    407,085,014.64x = 561,776,895.12 × 221,445,587.52
  4. Step 4: Simplify right side
    407,085,014.64x = 124,403,014,595,009,824
  5. Step 5: Solve for x
    x = 124,403,014,595,009,824/407,085,014.64
  6. Step 6: Final answer
    x = 305,594,679.54

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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.