Home / 912,890.00-1,369,459.58-380,286.47

Finding the Fourth Proportional to 912,890.00, 1,369,459.58 and 380,286.47

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Solution

The fourth proportional to 912,890.00, 1,369,459.58 and 380,286.47 is: 570,481.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,890.00 : 1,369,459.58 = 380,286.47 : x
  2. Step 2: Convert to fraction form
    912,890.00/1,369,459.58 = 380,286.47/x
  3. Step 3: Cross multiply
    912,890.00x = 1,369,459.58 × 380,286.47
  4. Step 4: Simplify right side
    912,890.00x = 520,786,940,737.15
  5. Step 5: Solve for x
    x = 520,786,940,737.15/912,890.00
  6. Step 6: Final answer
    x = 570,481.60

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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.