Home / 721,845,739.64-1,081,798,728.42-393,829,730.48

Finding the Fourth Proportional to 721,845,739.64, 1,081,798,728.42 and 393,829,730.48

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Solution

The fourth proportional to 721,845,739.64, 1,081,798,728.42 and 393,829,730.48 is: 590,215,441.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,845,739.64 : 1,081,798,728.42 = 393,829,730.48 : x
  2. Step 2: Convert to fraction form
    721,845,739.64/1,081,798,728.42 = 393,829,730.48/x
  3. Step 3: Cross multiply
    721,845,739.64x = 1,081,798,728.42 × 393,829,730.48
  4. Step 4: Simplify right side
    721,845,739.64x = 426,044,501,647,255,360
  5. Step 5: Solve for x
    x = 426,044,501,647,255,360/721,845,739.64
  6. Step 6: Final answer
    x = 590,215,441.13

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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.