Home / 668,860,963.15-1,004,047,271.93-396,385,257.55

Finding the Fourth Proportional to 668,860,963.15, 1,004,047,271.93 and 396,385,257.55

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Solution

The fourth proportional to 668,860,963.15, 1,004,047,271.93 and 396,385,257.55 is: 595,025,810.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,860,963.15 : 1,004,047,271.93 = 396,385,257.55 : x
  2. Step 2: Convert to fraction form
    668,860,963.15/1,004,047,271.93 = 396,385,257.55/x
  3. Step 3: Cross multiply
    668,860,963.15x = 1,004,047,271.93 × 396,385,257.55
  4. Step 4: Simplify right side
    668,860,963.15x = 397,989,536,474,366,016
  5. Step 5: Solve for x
    x = 397,989,536,474,366,016/668,860,963.15
  6. Step 6: Final answer
    x = 595,025,810.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.