Home / 1,294,505.69-1,786,550.38-778,427.15

Finding the Fourth Proportional to 1,294,505.69, 1,786,550.38 and 778,427.15

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Solution

The fourth proportional to 1,294,505.69, 1,786,550.38 and 778,427.15 is: 1,074,309.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294,505.69 : 1,786,550.38 = 778,427.15 : x
  2. Step 2: Convert to fraction form
    1,294,505.69/1,786,550.38 = 778,427.15/x
  3. Step 3: Cross multiply
    1,294,505.69x = 1,786,550.38 × 778,427.15
  4. Step 4: Simplify right side
    1,294,505.69x = 1,390,699,309,756.00
  5. Step 5: Solve for x
    x = 1,390,699,309,756.00/1,294,505.69
  6. Step 6: Final answer
    x = 1,074,309.16

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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.