Home / 1,210,270.74-1,670,106.78-666,384.90

Finding the Fourth Proportional to 1,210,270.74, 1,670,106.78 and 666,384.90

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Solution

The fourth proportional to 1,210,270.74, 1,670,106.78 and 666,384.90 is: 919,574.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,270.74 : 1,670,106.78 = 666,384.90 : x
  2. Step 2: Convert to fraction form
    1,210,270.74/1,670,106.78 = 666,384.90/x
  3. Step 3: Cross multiply
    1,210,270.74x = 1,670,106.78 × 666,384.90
  4. Step 4: Simplify right side
    1,210,270.74x = 1,112,933,939,579.62
  5. Step 5: Solve for x
    x = 1,112,933,939,579.62/1,210,270.74
  6. Step 6: Final answer
    x = 919,574.36

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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.