Home / 638,945.46-881,739.81-352,477.62

Finding the Fourth Proportional to 638,945.46, 881,739.81 and 352,477.62

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Solution

The fourth proportional to 638,945.46, 881,739.81 and 352,477.62 is: 486,416.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,945.46 : 881,739.81 = 352,477.62 : x
  2. Step 2: Convert to fraction form
    638,945.46/881,739.81 = 352,477.62/x
  3. Step 3: Cross multiply
    638,945.46x = 881,739.81 × 352,477.62
  4. Step 4: Simplify right side
    638,945.46x = 310,793,549,688.05
  5. Step 5: Solve for x
    x = 310,793,549,688.05/638,945.46
  6. Step 6: Final answer
    x = 486,416.40

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Double scale
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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.