Home / 490,984.21-677,547.57-284,261.32

Finding the Fourth Proportional to 490,984.21, 677,547.57 and 284,261.32

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Solution

The fourth proportional to 490,984.21, 677,547.57 and 284,261.32 is: 392,274.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,984.21 : 677,547.57 = 284,261.32 : x
  2. Step 2: Convert to fraction form
    490,984.21/677,547.57 = 284,261.32/x
  3. Step 3: Cross multiply
    490,984.21x = 677,547.57 × 284,261.32
  4. Step 4: Simplify right side
    490,984.21x = 192,600,566,610.99
  5. Step 5: Solve for x
    x = 192,600,566,610.99/490,984.21
  6. Step 6: Final answer
    x = 392,274.46

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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.