Home / 862,300.89-1,189,977.39-518,142.57

Finding the Fourth Proportional to 862,300.89, 1,189,977.39 and 518,142.57

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Solution

The fourth proportional to 862,300.89, 1,189,977.39 and 518,142.57 is: 715,038.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,300.89 : 1,189,977.39 = 518,142.57 : x
  2. Step 2: Convert to fraction form
    862,300.89/1,189,977.39 = 518,142.57/x
  3. Step 3: Cross multiply
    862,300.89x = 1,189,977.39 × 518,142.57
  4. Step 4: Simplify right side
    862,300.89x = 616,577,943,096.49
  5. Step 5: Solve for x
    x = 616,577,943,096.49/862,300.89
  6. Step 6: Final answer
    x = 715,038.05

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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.