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Finding the Fourth Proportional to 714,804.22, 986,447.01 and 388,131.13

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Solution

The fourth proportional to 714,804.22, 986,447.01 and 388,131.13 is: 535,630.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,804.22 : 986,447.01 = 388,131.13 : x
  2. Step 2: Convert to fraction form
    714,804.22/986,447.01 = 388,131.13/x
  3. Step 3: Cross multiply
    714,804.22x = 986,447.01 × 388,131.13
  4. Step 4: Simplify right side
    714,804.22x = 382,870,792,676.42
  5. Step 5: Solve for x
    x = 382,870,792,676.42/714,804.22
  6. Step 6: Final answer
    x = 535,630.29

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1.5x scale

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.