Home / 1,210,209.16-1,670,074.84-666,333.60

Finding the Fourth Proportional to 1,210,209.16, 1,670,074.84 and 666,333.60

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Solution

The fourth proportional to 1,210,209.16, 1,670,074.84 and 666,333.60 is: 919,532.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,209.16 : 1,670,074.84 = 666,333.60 : x
  2. Step 2: Convert to fraction form
    1,210,209.16/1,670,074.84 = 666,333.60/x
  3. Step 3: Cross multiply
    1,210,209.16x = 1,670,074.84 × 666,333.60
  4. Step 4: Simplify right side
    1,210,209.16x = 1,112,826,980,406.62
  5. Step 5: Solve for x
    x = 1,112,826,980,406.62/1,210,209.16
  6. Step 6: Final answer
    x = 919,532.77

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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.