Home / 668,860,990.40-1,004,047,312.80-396,385,284.80

Finding the Fourth Proportional to 668,860,990.40, 1,004,047,312.80 and 396,385,284.80

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Solution

The fourth proportional to 668,860,990.40, 1,004,047,312.80 and 396,385,284.80 is: 595,025,851.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,860,990.40 : 1,004,047,312.80 = 396,385,284.80 : x
  2. Step 2: Convert to fraction form
    668,860,990.40/1,004,047,312.80 = 396,385,284.80/x
  3. Step 3: Cross multiply
    668,860,990.40x = 1,004,047,312.80 × 396,385,284.80
  4. Step 4: Simplify right side
    668,860,990.40x = 397,989,580,036,902,656
  5. Step 5: Solve for x
    x = 397,989,580,036,902,656/668,860,990.40
  6. Step 6: Final answer
    x = 595,025,851.04

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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.