Home / 1,316,021.58-1,816,022.73-764,688.40

Finding the Fourth Proportional to 1,316,021.58, 1,816,022.73 and 764,688.40

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Solution

The fourth proportional to 1,316,021.58, 1,816,022.73 and 764,688.40 is: 1,055,219.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316,021.58 : 1,816,022.73 = 764,688.40 : x
  2. Step 2: Convert to fraction form
    1,316,021.58/1,816,022.73 = 764,688.40/x
  3. Step 3: Cross multiply
    1,316,021.58x = 1,816,022.73 × 764,688.40
  4. Step 4: Simplify right side
    1,316,021.58x = 1,388,691,514,094.86
  5. Step 5: Solve for x
    x = 1,388,691,514,094.86/1,316,021.58
  6. Step 6: Final answer
    x = 1,055,219.41

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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.