Home / 887,141.68-1,224,254.30-505,168.45

Finding the Fourth Proportional to 887,141.68, 1,224,254.30 and 505,168.45

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Solution

The fourth proportional to 887,141.68, 1,224,254.30 and 505,168.45 is: 697,131.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,141.68 : 1,224,254.30 = 505,168.45 : x
  2. Step 2: Convert to fraction form
    887,141.68/1,224,254.30 = 505,168.45/x
  3. Step 3: Cross multiply
    887,141.68x = 1,224,254.30 × 505,168.45
  4. Step 4: Simplify right side
    887,141.68x = 618,454,638,489.72
  5. Step 5: Solve for x
    x = 618,454,638,489.72/887,141.68
  6. Step 6: Final answer
    x = 697,131.76

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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.