Home / 638,429.10-881,026.38-351,949.19

Finding the Fourth Proportional to 638,429.10, 881,026.38 and 351,949.19

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Solution

The fourth proportional to 638,429.10, 881,026.38 and 351,949.19 is: 485,686.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,429.10 : 881,026.38 = 351,949.19 : x
  2. Step 2: Convert to fraction form
    638,429.10/881,026.38 = 351,949.19/x
  3. Step 3: Cross multiply
    638,429.10x = 881,026.38 × 351,949.19
  4. Step 4: Simplify right side
    638,429.10x = 310,076,520,809.63
  5. Step 5: Solve for x
    x = 310,076,520,809.63/638,429.10
  6. Step 6: Final answer
    x = 485,686.70

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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.