Home / 781,775,643.55-1,078,608,471.55-451,630,322.59

Finding the Fourth Proportional to 781,775,643.55, 1,078,608,471.55 and 451,630,322.59

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Solution

The fourth proportional to 781,775,643.55, 1,078,608,471.55 and 451,630,322.59 is: 623,110,090.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,775,643.55 : 1,078,608,471.55 = 451,630,322.59 : x
  2. Step 2: Convert to fraction form
    781,775,643.55/1,078,608,471.55 = 451,630,322.59/x
  3. Step 3: Cross multiply
    781,775,643.55x = 1,078,608,471.55 × 451,630,322.59
  4. Step 4: Simplify right side
    781,775,643.55x = 487,132,291,954,433,280
  5. Step 5: Solve for x
    x = 487,132,291,954,433,280/781,775,643.55
  6. Step 6: Final answer
    x = 623,110,090.44

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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.