Home / 1,421,978.66-1,962,378.52-777,386.06

Finding the Fourth Proportional to 1,421,978.66, 1,962,378.52 and 777,386.06

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Solution

The fourth proportional to 1,421,978.66, 1,962,378.52 and 777,386.06 is: 1,072,818.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,978.66 : 1,962,378.52 = 777,386.06 : x
  2. Step 2: Convert to fraction form
    1,421,978.66/1,962,378.52 = 777,386.06/x
  3. Step 3: Cross multiply
    1,421,978.66x = 1,962,378.52 × 777,386.06
  4. Step 4: Simplify right side
    1,421,978.66x = 1,525,525,694,136.07
  5. Step 5: Solve for x
    x = 1,525,525,694,136.07/1,421,978.66
  6. Step 6: Final answer
    x = 1,072,818.98

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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.