Home / 407,085,015.64-561,776,896.50-221,445,588.52

Finding the Fourth Proportional to 407,085,015.64, 561,776,896.50 and 221,445,588.52

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Solution

The fourth proportional to 407,085,015.64, 561,776,896.50 and 221,445,588.52 is: 305,594,680.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,085,015.64 : 561,776,896.50 = 221,445,588.52 : x
  2. Step 2: Convert to fraction form
    407,085,015.64/561,776,896.50 = 221,445,588.52/x
  3. Step 3: Cross multiply
    407,085,015.64x = 561,776,896.50 × 221,445,588.52
  4. Step 4: Simplify right side
    407,085,015.64x = 124,403,015,462,381,632
  5. Step 5: Solve for x
    x = 124,403,015,462,381,632/407,085,015.64
  6. Step 6: Final answer
    x = 305,594,680.92

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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.