Home / 1,411,111.40-2,115,111.90-780,477.80

Finding the Fourth Proportional to 1,411,111.40, 2,115,111.90 and 780,477.80

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Solution

The fourth proportional to 1,411,111.40, 2,115,111.90 and 780,477.80 is: 1,169,856.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,411,111.40 : 2,115,111.90 = 780,477.80 : x
  2. Step 2: Convert to fraction form
    1,411,111.40/2,115,111.90 = 780,477.80/x
  3. Step 3: Cross multiply
    1,411,111.40x = 2,115,111.90 × 780,477.80
  4. Step 4: Simplify right side
    1,411,111.40x = 1,650,797,882,465.82
  5. Step 5: Solve for x
    x = 1,650,797,882,465.82/1,411,111.40
  6. Step 6: Final answer
    x = 1,169,856.53

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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.