Home / 718,026.60-990,836.28-395,735.72

Finding the Fourth Proportional to 718,026.60, 990,836.28 and 395,735.72

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Solution

The fourth proportional to 718,026.60, 990,836.28 and 395,735.72 is: 546,093.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,026.60 : 990,836.28 = 395,735.72 : x
  2. Step 2: Convert to fraction form
    718,026.60/990,836.28 = 395,735.72/x
  3. Step 3: Cross multiply
    718,026.60x = 990,836.28 × 395,735.72
  4. Step 4: Simplify right side
    718,026.60x = 392,109,308,667.92
  5. Step 5: Solve for x
    x = 392,109,308,667.92/718,026.60
  6. Step 6: Final answer
    x = 546,093.01

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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.