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Finding the Fourth Proportional to 718,102.32, 990,969.38 and 395,842.41

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Solution

The fourth proportional to 718,102.32, 990,969.38 and 395,842.41 is: 546,256.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,102.32 : 990,969.38 = 395,842.41 : x
  2. Step 2: Convert to fraction form
    718,102.32/990,969.38 = 395,842.41/x
  3. Step 3: Cross multiply
    718,102.32x = 990,969.38 × 395,842.41
  4. Step 4: Simplify right side
    718,102.32x = 392,267,702,383.30
  5. Step 5: Solve for x
    x = 392,267,702,383.30/718,102.32
  6. Step 6: Final answer
    x = 546,256.00

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1.5x scale

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.