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Finding the Fourth Proportional to 648,911.37, 895,550 and 358,548.31

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Solution

The fourth proportional to 648,911.37, 895,550 and 358,548.31 is: 494,825.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,911.37 : 895,550 = 358,548.31 : x
  2. Step 2: Convert to fraction form
    648,911.37/895,550 = 358,548.31/x
  3. Step 3: Cross multiply
    648,911.37x = 895,550 × 358,548.31
  4. Step 4: Simplify right side
    648,911.37x = 321,097,939,020.50
  5. Step 5: Solve for x
    x = 321,097,939,020.50/648,911.37
  6. Step 6: Final answer
    x = 494,825.57

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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.