Home / 990,862,484.76-1,485,311,978.18-465,290,761.64

Finding the Fourth Proportional to 990,862,484.76, 1,485,311,978.18 and 465,290,761.64

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Solution

The fourth proportional to 990,862,484.76, 1,485,311,978.18 and 465,290,761.64 is: 697,475,131.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,862,484.76 : 1,485,311,978.18 = 465,290,761.64 : x
  2. Step 2: Convert to fraction form
    990,862,484.76/1,485,311,978.18 = 465,290,761.64/x
  3. Step 3: Cross multiply
    990,862,484.76x = 1,485,311,978.18 × 465,290,761.64
  4. Step 4: Simplify right side
    990,862,484.76x = 691,101,941,594,123,904
  5. Step 5: Solve for x
    x = 691,101,941,594,123,904/990,862,484.76
  6. Step 6: Final answer
    x = 697,475,131.24

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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.