Home / 1,201,815.80-1,658,505.78-665,271.80

Finding the Fourth Proportional to 1,201,815.80, 1,658,505.78 and 665,271.80

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Solution

The fourth proportional to 1,201,815.80, 1,658,505.78 and 665,271.80 is: 918,075.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,201,815.80 : 1,658,505.78 = 665,271.80 : x
  2. Step 2: Convert to fraction form
    1,201,815.80/1,658,505.78 = 665,271.80/x
  3. Step 3: Cross multiply
    1,201,815.80x = 1,658,505.78 × 665,271.80
  4. Step 4: Simplify right side
    1,201,815.80x = 1,103,357,125,571.00
  5. Step 5: Solve for x
    x = 1,103,357,125,571.00/1,201,815.80
  6. Step 6: Final answer
    x = 918,075.07

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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.