Home / 763,837.20-1,145,755.80-384,611.40

Finding the Fourth Proportional to 763,837.20, 1,145,755.80 and 384,611.40

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Solution

The fourth proportional to 763,837.20, 1,145,755.80 and 384,611.40 is: 576,917.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,837.20 : 1,145,755.80 = 384,611.40 : x
  2. Step 2: Convert to fraction form
    763,837.20/1,145,755.80 = 384,611.40/x
  3. Step 3: Cross multiply
    763,837.20x = 1,145,755.80 × 384,611.40
  4. Step 4: Simplify right side
    763,837.20x = 440,670,742,296.12
  5. Step 5: Solve for x
    x = 440,670,742,296.12/763,837.20
  6. Step 6: Final answer
    x = 576,917.10

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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.