Home / 918,961,012.08-1,268,174,290.32-501,275,154.96

Finding the Fourth Proportional to 918,961,012.08, 1,268,174,290.32 and 501,275,154.96

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Solution

The fourth proportional to 918,961,012.08, 1,268,174,290.32 and 501,275,154.96 is: 691,764,128.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,961,012.08 : 1,268,174,290.32 = 501,275,154.96 : x
  2. Step 2: Convert to fraction form
    918,961,012.08/1,268,174,290.32 = 501,275,154.96/x
  3. Step 3: Cross multiply
    918,961,012.08x = 1,268,174,290.32 × 501,275,154.96
  4. Step 4: Simplify right side
    918,961,012.08x = 635,704,263,896,445,952
  5. Step 5: Solve for x
    x = 635,704,263,896,445,952/918,961,012.08
  6. Step 6: Final answer
    x = 691,764,128.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.