Home / 1,421,269.96-1,961,357.66-776,690.22

Finding the Fourth Proportional to 1,421,269.96, 1,961,357.66 and 776,690.22

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Solution

The fourth proportional to 1,421,269.96, 1,961,357.66 and 776,690.22 is: 1,071,835.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,269.96 : 1,961,357.66 = 776,690.22 : x
  2. Step 2: Convert to fraction form
    1,421,269.96/1,961,357.66 = 776,690.22/x
  3. Step 3: Cross multiply
    1,421,269.96x = 1,961,357.66 × 776,690.22
  4. Step 4: Simplify right side
    1,421,269.96x = 1,523,367,312,444.09
  5. Step 5: Solve for x
    x = 1,523,367,312,444.09/1,421,269.96
  6. Step 6: Final answer
    x = 1,071,835.30

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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.