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Finding the Fourth Proportional to 646,652.94, 892,381.31 and 374,878.38

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Solution

The fourth proportional to 646,652.94, 892,381.31 and 374,878.38 is: 517,332.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,652.94 : 892,381.31 = 374,878.38 : x
  2. Step 2: Convert to fraction form
    646,652.94/892,381.31 = 374,878.38/x
  3. Step 3: Cross multiply
    646,652.94x = 892,381.31 × 374,878.38
  4. Step 4: Simplify right side
    646,652.94x = 334,534,457,960.69
  5. Step 5: Solve for x
    x = 334,534,457,960.69/646,652.94
  6. Step 6: Final answer
    x = 517,332.31

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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.