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Finding the Fourth Proportional to 660,308.46, 909,185.37 and 515,698.38

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Solution

The fourth proportional to 660,308.46, 909,185.37 and 515,698.38 is: 710,070.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,308.46 : 909,185.37 = 515,698.38 : x
  2. Step 2: Convert to fraction form
    660,308.46/909,185.37 = 515,698.38/x
  3. Step 3: Cross multiply
    660,308.46x = 909,185.37 × 515,698.38
  4. Step 4: Simplify right side
    660,308.46x = 468,865,422,428.70
  5. Step 5: Solve for x
    x = 468,865,422,428.70/660,308.46
  6. Step 6: Final answer
    x = 710,070.29

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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.