Home / 1,421,559.19-1,961,722.74-776,984

Finding the Fourth Proportional to 1,421,559.19, 1,961,722.74 and 776,984

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Solution

The fourth proportional to 1,421,559.19, 1,961,722.74 and 776,984 is: 1,072,222.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,559.19 : 1,961,722.74 = 776,984 : x
  2. Step 2: Convert to fraction form
    1,421,559.19/1,961,722.74 = 776,984/x
  3. Step 3: Cross multiply
    1,421,559.19x = 1,961,722.74 × 776,984
  4. Step 4: Simplify right side
    1,421,559.19x = 1,524,227,181,416.16
  5. Step 5: Solve for x
    x = 1,524,227,181,416.16/1,421,559.19
  6. Step 6: Final answer
    x = 1,072,222.10

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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.