Home / 811,021.40-1,119,164.40-448,423.50

Finding the Fourth Proportional to 811,021.40, 1,119,164.40 and 448,423.50

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Solution

The fourth proportional to 811,021.40, 1,119,164.40 and 448,423.50 is: 618,799.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,021.40 : 1,119,164.40 = 448,423.50 : x
  2. Step 2: Convert to fraction form
    811,021.40/1,119,164.40 = 448,423.50/x
  3. Step 3: Cross multiply
    811,021.40x = 1,119,164.40 × 448,423.50
  4. Step 4: Simplify right side
    811,021.40x = 501,859,617,323.40
  5. Step 5: Solve for x
    x = 501,859,617,323.40/811,021.40
  6. Step 6: Final answer
    x = 618,799.48

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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.