Home / 887,142.68-1,224,255.68-505,169.45

Finding the Fourth Proportional to 887,142.68, 1,224,255.68 and 505,169.45

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Solution

The fourth proportional to 887,142.68, 1,224,255.68 and 505,169.45 is: 697,133.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,142.68 : 1,224,255.68 = 505,169.45 : x
  2. Step 2: Convert to fraction form
    887,142.68/1,224,255.68 = 505,169.45/x
  3. Step 3: Cross multiply
    887,142.68x = 1,224,255.68 × 505,169.45
  4. Step 4: Simplify right side
    887,142.68x = 618,456,559,877.85
  5. Step 5: Solve for x
    x = 618,456,559,877.85/887,142.68
  6. Step 6: Final answer
    x = 697,133.14

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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.