Home / 1,210,866.02-1,670,987.33-666,989.21

Finding the Fourth Proportional to 1,210,866.02, 1,670,987.33 and 666,989.21

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Solution

The fourth proportional to 1,210,866.02, 1,670,987.33 and 666,989.21 is: 920,440.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,866.02 : 1,670,987.33 = 666,989.21 : x
  2. Step 2: Convert to fraction form
    1,210,866.02/1,670,987.33 = 666,989.21/x
  3. Step 3: Cross multiply
    1,210,866.02x = 1,670,987.33 × 666,989.21
  4. Step 4: Simplify right side
    1,210,866.02x = 1,114,530,510,801.77
  5. Step 5: Solve for x
    x = 1,114,530,510,801.77/1,210,866.02
  6. Step 6: Final answer
    x = 920,440.82

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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.