Home / 1,428,360.48-1,971,071.20-783,764.64

Finding the Fourth Proportional to 1,428,360.48, 1,971,071.20 and 783,764.64

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Solution

The fourth proportional to 1,428,360.48, 1,971,071.20 and 783,764.64 is: 1,081,558.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,360.48 : 1,971,071.20 = 783,764.64 : x
  2. Step 2: Convert to fraction form
    1,428,360.48/1,971,071.20 = 783,764.64/x
  3. Step 3: Cross multiply
    1,428,360.48x = 1,971,071.20 × 783,764.64
  4. Step 4: Simplify right side
    1,428,360.48x = 1,544,855,909,482.37
  5. Step 5: Solve for x
    x = 1,544,855,909,482.37/1,428,360.48
  6. Step 6: Final answer
    x = 1,081,558.84

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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.