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Finding the Fourth Proportional to 1,347,749.64, 2,019,835.98 and 715,301.64

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Solution

The fourth proportional to 1,347,749.64, 2,019,835.98 and 715,301.64 is: 1,072,003.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347,749.64 : 2,019,835.98 = 715,301.64 : x
  2. Step 2: Convert to fraction form
    1,347,749.64/2,019,835.98 = 715,301.64/x
  3. Step 3: Cross multiply
    1,347,749.64x = 2,019,835.98 × 715,301.64
  4. Step 4: Simplify right side
    1,347,749.64x = 1,444,791,989,025.01
  5. Step 5: Solve for x
    x = 1,444,791,989,025.01/1,347,749.64
  6. Step 6: Final answer
    x = 1,072,003.25

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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.