Home / 919,690,837.30-1,268,983,894.65-528,474,678.58

Finding the Fourth Proportional to 919,690,837.30, 1,268,983,894.65 and 528,474,678.58

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Solution

The fourth proportional to 919,690,837.30, 1,268,983,894.65 and 528,474,678.58 is: 729,186,188.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,690,837.30 : 1,268,983,894.65 = 528,474,678.58 : x
  2. Step 2: Convert to fraction form
    919,690,837.30/1,268,983,894.65 = 528,474,678.58/x
  3. Step 3: Cross multiply
    919,690,837.30x = 1,268,983,894.65 × 528,474,678.58
  4. Step 4: Simplify right side
    919,690,837.30x = 670,625,855,848,355,328
  5. Step 5: Solve for x
    x = 670,625,855,848,355,328/919,690,837.30
  6. Step 6: Final answer
    x = 729,186,188.06

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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.