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Finding the Fourth Proportional to 2,916,698.40, 4,374,464.40 and 1,400,378.40

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Solution

The fourth proportional to 2,916,698.40, 4,374,464.40 and 1,400,378.40 is: 2,100,287.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,916,698.40 : 4,374,464.40 = 1,400,378.40 : x
  2. Step 2: Convert to fraction form
    2,916,698.40/4,374,464.40 = 1,400,378.40/x
  3. Step 3: Cross multiply
    2,916,698.40x = 4,374,464.40 × 1,400,378.40
  4. Step 4: Simplify right side
    2,916,698.40x = 6,125,905,457,328.96
  5. Step 5: Solve for x
    x = 6,125,905,457,328.96/2,916,698.40
  6. Step 6: Final answer
    x = 2,100,287.59

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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.