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Finding the Fourth Proportional to 678,070.63, 935,866.47 and 448,632.46

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Solution

The fourth proportional to 678,070.63, 935,866.47 and 448,632.46 is: 619,198.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,070.63 : 935,866.47 = 448,632.46 : x
  2. Step 2: Convert to fraction form
    678,070.63/935,866.47 = 448,632.46/x
  3. Step 3: Cross multiply
    678,070.63x = 935,866.47 × 448,632.46
  4. Step 4: Simplify right side
    678,070.63x = 419,860,076,667.62
  5. Step 5: Solve for x
    x = 419,860,076,667.62/678,070.63
  6. Step 6: Final answer
    x = 619,198.15

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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.