Home / 745,540.32-1,116,628.08-345,340.32

Finding the Fourth Proportional to 745,540.32, 1,116,628.08 and 345,340.32

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Solution

The fourth proportional to 745,540.32, 1,116,628.08 and 345,340.32 is: 517,231.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,540.32 : 1,116,628.08 = 345,340.32 : x
  2. Step 2: Convert to fraction form
    745,540.32/1,116,628.08 = 345,340.32/x
  3. Step 3: Cross multiply
    745,540.32x = 1,116,628.08 × 345,340.32
  4. Step 4: Simplify right side
    745,540.32x = 385,616,698,468.19
  5. Step 5: Solve for x
    x = 385,616,698,468.19/745,540.32
  6. Step 6: Final answer
    x = 517,231.18

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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.