Home / 1,210,790.62-1,670,902.59-666,928.81

Finding the Fourth Proportional to 1,210,790.62, 1,670,902.59 and 666,928.81

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Solution

The fourth proportional to 1,210,790.62, 1,670,902.59 and 666,928.81 is: 920,368.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,790.62 : 1,670,902.59 = 666,928.81 : x
  2. Step 2: Convert to fraction form
    1,210,790.62/1,670,902.59 = 666,928.81/x
  3. Step 3: Cross multiply
    1,210,790.62x = 1,670,902.59 × 666,928.81
  4. Step 4: Simplify right side
    1,210,790.62x = 1,114,373,075,974.62
  5. Step 5: Solve for x
    x = 1,114,373,075,974.62/1,210,790.62
  6. Step 6: Final answer
    x = 920,368.11

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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.