Home / 1,121,705.28-1,682,779.80-411,739.47

Finding the Fourth Proportional to 1,121,705.28, 1,682,779.80 and 411,739.47

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Solution

The fourth proportional to 1,121,705.28, 1,682,779.80 and 411,739.47 is: 617,690.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,705.28 : 1,682,779.80 = 411,739.47 : x
  2. Step 2: Convert to fraction form
    1,121,705.28/1,682,779.80 = 411,739.47/x
  3. Step 3: Cross multiply
    1,121,705.28x = 1,682,779.80 × 411,739.47
  4. Step 4: Simplify right side
    1,121,705.28x = 692,866,862,978.71
  5. Step 5: Solve for x
    x = 692,866,862,978.71/1,121,705.28
  6. Step 6: Final answer
    x = 617,690.65

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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.