Home / 1,210,478.08-1,670,429.44-666,609.60

Finding the Fourth Proportional to 1,210,478.08, 1,670,429.44 and 666,609.60

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Solution

The fourth proportional to 1,210,478.08, 1,670,429.44 and 666,609.60 is: 919,904.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,478.08 : 1,670,429.44 = 666,609.60 : x
  2. Step 2: Convert to fraction form
    1,210,478.08/1,670,429.44 = 666,609.60/x
  3. Step 3: Cross multiply
    1,210,478.08x = 1,670,429.44 × 666,609.60
  4. Step 4: Simplify right side
    1,210,478.08x = 1,113,524,300,826.62
  5. Step 5: Solve for x
    x = 1,113,524,300,826.62/1,210,478.08
  6. Step 6: Final answer
    x = 919,904.56

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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.