Home / 1,210,212.16-1,670,078.98-666,336.60

Finding the Fourth Proportional to 1,210,212.16, 1,670,078.98 and 666,336.60

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Solution

The fourth proportional to 1,210,212.16, 1,670,078.98 and 666,336.60 is: 919,536.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,212.16 : 1,670,078.98 = 666,336.60 : x
  2. Step 2: Convert to fraction form
    1,210,212.16/1,670,078.98 = 666,336.60/x
  3. Step 3: Cross multiply
    1,210,212.16x = 1,670,078.98 × 666,336.60
  4. Step 4: Simplify right side
    1,210,212.16x = 1,112,834,749,264.67
  5. Step 5: Solve for x
    x = 1,112,834,749,264.67/1,210,212.16
  6. Step 6: Final answer
    x = 919,536.91

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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.