Home / 989,739,271.70-1,484,608,907.55-343,507,015.70

Finding the Fourth Proportional to 989,739,271.70, 1,484,608,907.55 and 343,507,015.70

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Solution

The fourth proportional to 989,739,271.70, 1,484,608,907.55 and 343,507,015.70 is: 515,260,523.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,739,271.70 : 1,484,608,907.55 = 343,507,015.70 : x
  2. Step 2: Convert to fraction form
    989,739,271.70/1,484,608,907.55 = 343,507,015.70/x
  3. Step 3: Cross multiply
    989,739,271.70x = 1,484,608,907.55 × 343,507,015.70
  4. Step 4: Simplify right side
    989,739,271.70x = 509,973,575,314,137,664
  5. Step 5: Solve for x
    x = 509,973,575,314,137,664/989,739,271.70
  6. Step 6: Final answer
    x = 515,260,523.55

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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.