Home / 1,291,979-1,782,913.60-719,019.02

Finding the Fourth Proportional to 1,291,979, 1,782,913.60 and 719,019.02

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Solution

The fourth proportional to 1,291,979, 1,782,913.60 and 719,019.02 is: 992,236.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,979 : 1,782,913.60 = 719,019.02 : x
  2. Step 2: Convert to fraction form
    1,291,979/1,782,913.60 = 719,019.02/x
  3. Step 3: Cross multiply
    1,291,979x = 1,782,913.60 × 719,019.02
  4. Step 4: Simplify right side
    1,291,979x = 1,281,948,789,416.67
  5. Step 5: Solve for x
    x = 1,281,948,789,416.67/1,291,979
  6. Step 6: Final answer
    x = 992,236.55

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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.