Home / 763,311.60-1,145,404.80-290,336.40

Finding the Fourth Proportional to 763,311.60, 1,145,404.80 and 290,336.40

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Solution

The fourth proportional to 763,311.60, 1,145,404.80 and 290,336.40 is: 435,670.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,311.60 : 1,145,404.80 = 290,336.40 : x
  2. Step 2: Convert to fraction form
    763,311.60/1,145,404.80 = 290,336.40/x
  3. Step 3: Cross multiply
    763,311.60x = 1,145,404.80 × 290,336.40
  4. Step 4: Simplify right side
    763,311.60x = 332,552,706,174.72
  5. Step 5: Solve for x
    x = 332,552,706,174.72/763,311.60
  6. Step 6: Final answer
    x = 435,670.97

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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.