Home / 845,419.04-1,268,294.32-312,944.64

Finding the Fourth Proportional to 845,419.04, 1,268,294.32 and 312,944.64

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Solution

The fourth proportional to 845,419.04, 1,268,294.32 and 312,944.64 is: 469,478.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    845,419.04 : 1,268,294.32 = 312,944.64 : x
  2. Step 2: Convert to fraction form
    845,419.04/1,268,294.32 = 312,944.64/x
  3. Step 3: Cross multiply
    845,419.04x = 1,268,294.32 × 312,944.64
  4. Step 4: Simplify right side
    845,419.04x = 396,905,909,386.45
  5. Step 5: Solve for x
    x = 396,905,909,386.45/845,419.04
  6. Step 6: Final answer
    x = 469,478.32

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Double scale
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Similar ratio
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1.5x scale

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.