Home / 490,291.07-676,328.61-455,612.58

Finding the Fourth Proportional to 490,291.07, 676,328.61 and 455,612.58

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Solution

The fourth proportional to 490,291.07, 676,328.61 and 455,612.58 is: 628,491.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,291.07 : 676,328.61 = 455,612.58 : x
  2. Step 2: Convert to fraction form
    490,291.07/676,328.61 = 455,612.58/x
  3. Step 3: Cross multiply
    490,291.07x = 676,328.61 × 455,612.58
  4. Step 4: Simplify right side
    490,291.07x = 308,143,824,638.46
  5. Step 5: Solve for x
    x = 308,143,824,638.46/490,291.07
  6. Step 6: Final answer
    x = 628,491.62

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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.