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Finding the Fourth Proportional to 644,552,594.72, 889,482,708.72 and 351,197,162.72

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Solution

The fourth proportional to 644,552,594.72, 889,482,708.72 and 351,197,162.72 is: 484,652,154.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,552,594.72 : 889,482,708.72 = 351,197,162.72 : x
  2. Step 2: Convert to fraction form
    644,552,594.72/889,482,708.72 = 351,197,162.72/x
  3. Step 3: Cross multiply
    644,552,594.72x = 889,482,708.72 × 351,197,162.72
  4. Step 4: Simplify right side
    644,552,594.72x = 312,383,803,590,964,224
  5. Step 5: Solve for x
    x = 312,383,803,590,964,224/644,552,594.72
  6. Step 6: Final answer
    x = 484,652,154.30

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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.