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Finding the Fourth Proportional to 646,725.67, 892,483.04 and 388,606.93

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Solution

The fourth proportional to 646,725.67, 892,483.04 and 388,606.93 is: 536,278.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,725.67 : 892,483.04 = 388,606.93 : x
  2. Step 2: Convert to fraction form
    646,725.67/892,483.04 = 388,606.93/x
  3. Step 3: Cross multiply
    646,725.67x = 892,483.04 × 388,606.93
  4. Step 4: Simplify right side
    646,725.67x = 346,825,092,991.78
  5. Step 5: Solve for x
    x = 346,825,092,991.78/646,725.67
  6. Step 6: Final answer
    x = 536,278.53

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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.