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Finding the Fourth Proportional to 683,017.19, 942,646.37 and 388,738.45

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Solution

The fourth proportional to 683,017.19, 942,646.37 and 388,738.45 is: 536,506.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,017.19 : 942,646.37 = 388,738.45 : x
  2. Step 2: Convert to fraction form
    683,017.19/942,646.37 = 388,738.45/x
  3. Step 3: Cross multiply
    683,017.19x = 942,646.37 × 388,738.45
  4. Step 4: Simplify right side
    683,017.19x = 366,442,888,006.54
  5. Step 5: Solve for x
    x = 366,442,888,006.54/683,017.19
  6. Step 6: Final answer
    x = 536,506.10

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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.