Home / 912,893.42-1,369,464.73-380,289.86

Finding the Fourth Proportional to 912,893.42, 1,369,464.73 and 380,289.86

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Solution

The fourth proportional to 912,893.42, 1,369,464.73 and 380,289.86 is: 570,486.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,893.42 : 1,369,464.73 = 380,289.86 : x
  2. Step 2: Convert to fraction form
    912,893.42/1,369,464.73 = 380,289.86/x
  3. Step 3: Cross multiply
    912,893.42x = 1,369,464.73 × 380,289.86
  4. Step 4: Simplify right side
    912,893.42x = 520,793,552,919.58
  5. Step 5: Solve for x
    x = 520,793,552,919.58/912,893.42
  6. Step 6: Final answer
    x = 570,486.70

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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.