Home / 811,007.70-1,119,142.54-448,403.10

Finding the Fourth Proportional to 811,007.70, 1,119,142.54 and 448,403.10

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Solution

The fourth proportional to 811,007.70, 1,119,142.54 and 448,403.10 is: 618,769.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,007.70 : 1,119,142.54 = 448,403.10 : x
  2. Step 2: Convert to fraction form
    811,007.70/1,119,142.54 = 448,403.10/x
  3. Step 3: Cross multiply
    811,007.70x = 1,119,142.54 × 448,403.10
  4. Step 4: Simplify right side
    811,007.70x = 501,826,984,277.87
  5. Step 5: Solve for x
    x = 501,826,984,277.87/811,007.70
  6. Step 6: Final answer
    x = 618,769.69

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1.5x scale

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.