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Finding the Fourth Proportional to 1,328,669.73, 1,833,547.39 and 747,890.01

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Solution

The fourth proportional to 1,328,669.73, 1,833,547.39 and 747,890.01 is: 1,032,078.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,669.73 : 1,833,547.39 = 747,890.01 : x
  2. Step 2: Convert to fraction form
    1,328,669.73/1,833,547.39 = 747,890.01/x
  3. Step 3: Cross multiply
    1,328,669.73x = 1,833,547.39 × 747,890.01
  4. Step 4: Simplify right side
    1,328,669.73x = 1,371,291,773,972.85
  5. Step 5: Solve for x
    x = 1,371,291,773,972.85/1,328,669.73
  6. Step 6: Final answer
    x = 1,032,078.73

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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.