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Finding the Fourth Proportional to 554,959.88, 765,879.32 and 313,283.40

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Solution

The fourth proportional to 554,959.88, 765,879.32 and 313,283.40 is: 432,350.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,959.88 : 765,879.32 = 313,283.40 : x
  2. Step 2: Convert to fraction form
    554,959.88/765,879.32 = 313,283.40/x
  3. Step 3: Cross multiply
    554,959.88x = 765,879.32 × 313,283.40
  4. Step 4: Simplify right side
    554,959.88x = 239,937,277,359.29
  5. Step 5: Solve for x
    x = 239,937,277,359.29/554,959.88
  6. Step 6: Final answer
    x = 432,350.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.