Home / 643,767.40-965,688.00-170,440.45

Finding the Fourth Proportional to 643,767.40, 965,688.00 and 170,440.45

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Solution

The fourth proportional to 643,767.40, 965,688.00 and 170,440.45 is: 255,670.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,767.40 : 965,688.00 = 170,440.45 : x
  2. Step 2: Convert to fraction form
    643,767.40/965,688.00 = 170,440.45/x
  3. Step 3: Cross multiply
    643,767.40x = 965,688.00 × 170,440.45
  4. Step 4: Simplify right side
    643,767.40x = 164,592,300,137.59
  5. Step 5: Solve for x
    x = 164,592,300,137.59/643,767.40
  6. Step 6: Final answer
    x = 255,670.45

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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.