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Finding the Fourth Proportional to 1,121,853, 1,682,779.50 and 333,885

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Solution

The fourth proportional to 1,121,853, 1,682,779.50 and 333,885 is: 500,827.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,853 : 1,682,779.50 = 333,885 : x
  2. Step 2: Convert to fraction form
    1,121,853/1,682,779.50 = 333,885/x
  3. Step 3: Cross multiply
    1,121,853x = 1,682,779.50 × 333,885
  4. Step 4: Simplify right side
    1,121,853x = 561,854,833,357.50
  5. Step 5: Solve for x
    x = 561,854,833,357.50/1,121,853
  6. Step 6: Final answer
    x = 500,827.50

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1.5x scale

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.