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Finding the Fourth Proportional to 849,236.50, 1,171,978.64 and 486,730.32

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Solution

The fourth proportional to 849,236.50, 1,171,978.64 and 486,730.32 is: 671,706.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    849,236.50 : 1,171,978.64 = 486,730.32 : x
  2. Step 2: Convert to fraction form
    849,236.50/1,171,978.64 = 486,730.32/x
  3. Step 3: Cross multiply
    849,236.50x = 1,171,978.64 × 486,730.32
  4. Step 4: Simplify right side
    849,236.50x = 570,437,538,480.37
  5. Step 5: Solve for x
    x = 570,437,538,480.37/849,236.50
  6. Step 6: Final answer
    x = 671,706.34

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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.