Home / 645,530.10-890,813.04-351,170.58

Finding the Fourth Proportional to 645,530.10, 890,813.04 and 351,170.58

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Solution

The fourth proportional to 645,530.10, 890,813.04 and 351,170.58 is: 484,605.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,530.10 : 890,813.04 = 351,170.58 : x
  2. Step 2: Convert to fraction form
    645,530.10/890,813.04 = 351,170.58/x
  3. Step 3: Cross multiply
    645,530.10x = 890,813.04 × 351,170.58
  4. Step 4: Simplify right side
    645,530.10x = 312,827,331,928.36
  5. Step 5: Solve for x
    x = 312,827,331,928.36/645,530.10
  6. Step 6: Final answer
    x = 484,605.34

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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.