Home / 1,210,866.27-1,670,987.68-666,989.45

Finding the Fourth Proportional to 1,210,866.27, 1,670,987.68 and 666,989.45

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Solution

The fourth proportional to 1,210,866.27, 1,670,987.68 and 666,989.45 is: 920,441.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,866.27 : 1,670,987.68 = 666,989.45 : x
  2. Step 2: Convert to fraction form
    1,210,866.27/1,670,987.68 = 666,989.45/x
  3. Step 3: Cross multiply
    1,210,866.27x = 1,670,987.68 × 666,989.45
  4. Step 4: Simplify right side
    1,210,866.27x = 1,114,531,156,149.97
  5. Step 5: Solve for x
    x = 1,114,531,156,149.97/1,210,866.27
  6. Step 6: Final answer
    x = 920,441.16

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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.