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Finding the Fourth Proportional to 626,347,482.52, 864,263,440.65 and 361,978,424.13

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Solution

The fourth proportional to 626,347,482.52, 864,263,440.65 and 361,978,424.13 is: 499,474,695.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,347,482.52 : 864,263,440.65 = 361,978,424.13 : x
  2. Step 2: Convert to fraction form
    626,347,482.52/864,263,440.65 = 361,978,424.13/x
  3. Step 3: Cross multiply
    626,347,482.52x = 864,263,440.65 × 361,978,424.13
  4. Step 4: Simplify right side
    626,347,482.52x = 312,844,718,279,658,752
  5. Step 5: Solve for x
    x = 312,844,718,279,658,752/626,347,482.52
  6. Step 6: Final answer
    x = 499,474,695.78

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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.