Home / 879,461.28-1,213,686.36-516,879.90

Finding the Fourth Proportional to 879,461.28, 1,213,686.36 and 516,879.90

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Solution

The fourth proportional to 879,461.28, 1,213,686.36 and 516,879.90 is: 713,311.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,461.28 : 1,213,686.36 = 516,879.90 : x
  2. Step 2: Convert to fraction form
    879,461.28/1,213,686.36 = 516,879.90/x
  3. Step 3: Cross multiply
    879,461.28x = 1,213,686.36 × 516,879.90
  4. Step 4: Simplify right side
    879,461.28x = 627,330,084,388.16
  5. Step 5: Solve for x
    x = 627,330,084,388.16/879,461.28
  6. Step 6: Final answer
    x = 713,311.77

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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.