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Finding the Fourth Proportional to 1,888,885.12, 2,606,584.32 and 1,029,426.88

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Solution

The fourth proportional to 1,888,885.12, 2,606,584.32 and 1,029,426.88 is: 1,420,567.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,888,885.12 : 2,606,584.32 = 1,029,426.88 : x
  2. Step 2: Convert to fraction form
    1,888,885.12/2,606,584.32 = 1,029,426.88/x
  3. Step 3: Cross multiply
    1,888,885.12x = 2,606,584.32 × 1,029,426.88
  4. Step 4: Simplify right side
    1,888,885.12x = 2,683,287,963,994.52
  5. Step 5: Solve for x
    x = 2,683,287,963,994.52/1,888,885.12
  6. Step 6: Final answer
    x = 1,420,567.05

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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.