Home / 990,862,485.76-1,485,311,979.68-465,290,762.64

Finding the Fourth Proportional to 990,862,485.76, 1,485,311,979.68 and 465,290,762.64

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Solution

The fourth proportional to 990,862,485.76, 1,485,311,979.68 and 465,290,762.64 is: 697,475,132.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,862,485.76 : 1,485,311,979.68 = 465,290,762.64 : x
  2. Step 2: Convert to fraction form
    990,862,485.76/1,485,311,979.68 = 465,290,762.64/x
  3. Step 3: Cross multiply
    990,862,485.76x = 1,485,311,979.68 × 465,290,762.64
  4. Step 4: Simplify right side
    990,862,485.76x = 691,101,943,783,635,456
  5. Step 5: Solve for x
    x = 691,101,943,783,635,456/990,862,485.76
  6. Step 6: Final answer
    x = 697,475,132.74

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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.