Home / 380,321.15-570,768.66-260,090.82

Finding the Fourth Proportional to 380,321.15, 570,768.66 and 260,090.82

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Solution

The fourth proportional to 380,321.15, 570,768.66 and 260,090.82 is: 390,332.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,321.15 : 570,768.66 = 260,090.82 : x
  2. Step 2: Convert to fraction form
    380,321.15/570,768.66 = 260,090.82/x
  3. Step 3: Cross multiply
    380,321.15x = 570,768.66 × 260,090.82
  4. Step 4: Simplify right side
    380,321.15x = 148,451,688,809.70
  5. Step 5: Solve for x
    x = 148,451,688,809.70/380,321.15
  6. Step 6: Final answer
    x = 390,332.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.