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Finding the Fourth Proportional to 380,406.83, 570,396.48 and 260,598.87

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Solution

The fourth proportional to 380,406.83, 570,396.48 and 260,598.87 is: 390,751.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,406.83 : 570,396.48 = 260,598.87 : x
  2. Step 2: Convert to fraction form
    380,406.83/570,396.48 = 260,598.87/x
  3. Step 3: Cross multiply
    380,406.83x = 570,396.48 × 260,598.87
  4. Step 4: Simplify right side
    380,406.83x = 148,644,678,628.60
  5. Step 5: Solve for x
    x = 148,644,678,628.60/380,406.83
  6. Step 6: Final answer
    x = 390,751.87

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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.