Home / 1,210,643.76-1,670,764.22-666,779.43

Finding the Fourth Proportional to 1,210,643.76, 1,670,764.22 and 666,779.43

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Solution

The fourth proportional to 1,210,643.76, 1,670,764.22 and 666,779.43 is: 920,197.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,643.76 : 1,670,764.22 = 666,779.43 : x
  2. Step 2: Convert to fraction form
    1,210,643.76/1,670,764.22 = 666,779.43/x
  3. Step 3: Cross multiply
    1,210,643.76x = 1,670,764.22 × 666,779.43
  4. Step 4: Simplify right side
    1,210,643.76x = 1,114,031,210,942.10
  5. Step 5: Solve for x
    x = 1,114,031,210,942.10/1,210,643.76
  6. Step 6: Final answer
    x = 920,197.38

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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.