Home / 721,848.64-995,922.12-419,984.32

Finding the Fourth Proportional to 721,848.64, 995,922.12 and 419,984.32

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Solution

The fourth proportional to 721,848.64, 995,922.12 and 419,984.32 is: 579,445.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,848.64 : 995,922.12 = 419,984.32 : x
  2. Step 2: Convert to fraction form
    721,848.64/995,922.12 = 419,984.32/x
  3. Step 3: Cross multiply
    721,848.64x = 995,922.12 × 419,984.32
  4. Step 4: Simplify right side
    721,848.64x = 418,271,674,341.16
  5. Step 5: Solve for x
    x = 418,271,674,341.16/721,848.64
  6. Step 6: Final answer
    x = 579,445.12

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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.