Home / 438,256,555.40-657,335,066.70-115,173,086.60

Finding the Fourth Proportional to 438,256,555.40, 657,335,066.70 and 115,173,086.60

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Solution

The fourth proportional to 438,256,555.40, 657,335,066.70 and 115,173,086.60 is: 172,746,551.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,256,555.40 : 657,335,066.70 = 115,173,086.60 : x
  2. Step 2: Convert to fraction form
    438,256,555.40/657,335,066.70 = 115,173,086.60/x
  3. Step 3: Cross multiply
    438,256,555.40x = 657,335,066.70 × 115,173,086.60
  4. Step 4: Simplify right side
    438,256,555.40x = 75,707,308,562,255,872
  5. Step 5: Solve for x
    x = 75,707,308,562,255,872/438,256,555.40
  6. Step 6: Final answer
    x = 172,746,551.37

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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.