Home / 407,085,016.64-561,776,897.88-221,445,589.52

Finding the Fourth Proportional to 407,085,016.64, 561,776,897.88 and 221,445,589.52

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Solution

The fourth proportional to 407,085,016.64, 561,776,897.88 and 221,445,589.52 is: 305,594,682.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,085,016.64 : 561,776,897.88 = 221,445,589.52 : x
  2. Step 2: Convert to fraction form
    407,085,016.64/561,776,897.88 = 221,445,589.52/x
  3. Step 3: Cross multiply
    407,085,016.64x = 561,776,897.88 × 221,445,589.52
  4. Step 4: Simplify right side
    407,085,016.64x = 124,403,016,329,753,440
  5. Step 5: Solve for x
    x = 124,403,016,329,753,440/407,085,016.64
  6. Step 6: Final answer
    x = 305,594,682.30

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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.