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Finding the Fourth Proportional to 660,483.88, 911,746.77 and 445,914.58

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Solution

The fourth proportional to 660,483.88, 911,746.77 and 445,914.58 is: 615,550.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,483.88 : 911,746.77 = 445,914.58 : x
  2. Step 2: Convert to fraction form
    660,483.88/911,746.77 = 445,914.58/x
  3. Step 3: Cross multiply
    660,483.88x = 911,746.77 × 445,914.58
  4. Step 4: Simplify right side
    660,483.88x = 406,561,178,010.91
  5. Step 5: Solve for x
    x = 406,561,178,010.91/660,483.88
  6. Step 6: Final answer
    x = 615,550.49

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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.