Home / 458,078.10-631,733.61-286,011.60

Finding the Fourth Proportional to 458,078.10, 631,733.61 and 286,011.60

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Solution

The fourth proportional to 458,078.10, 631,733.61 and 286,011.60 is: 394,437.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,078.10 : 631,733.61 = 286,011.60 : x
  2. Step 2: Convert to fraction form
    458,078.10/631,733.61 = 286,011.60/x
  3. Step 3: Cross multiply
    458,078.10x = 631,733.61 × 286,011.60
  4. Step 4: Simplify right side
    458,078.10x = 180,683,140,569.88
  5. Step 5: Solve for x
    x = 180,683,140,569.88/458,078.10
  6. Step 6: Final answer
    x = 394,437.41

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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.