Home / 718,032.60-990,844.56-395,741.72

Finding the Fourth Proportional to 718,032.60, 990,844.56 and 395,741.72

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Solution

The fourth proportional to 718,032.60, 990,844.56 and 395,741.72 is: 546,101.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,032.60 : 990,844.56 = 395,741.72 : x
  2. Step 2: Convert to fraction form
    718,032.60/990,844.56 = 395,741.72/x
  3. Step 3: Cross multiply
    718,032.60x = 990,844.56 × 395,741.72
  4. Step 4: Simplify right side
    718,032.60x = 392,118,530,427.04
  5. Step 5: Solve for x
    x = 392,118,530,427.04/718,032.60
  6. Step 6: Final answer
    x = 546,101.29

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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.