Home / 645,529.10-890,811.66-351,169.58

Finding the Fourth Proportional to 645,529.10, 890,811.66 and 351,169.58

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Solution

The fourth proportional to 645,529.10, 890,811.66 and 351,169.58 is: 484,603.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,529.10 : 890,811.66 = 351,169.58 : x
  2. Step 2: Convert to fraction form
    645,529.10/890,811.66 = 351,169.58/x
  3. Step 3: Cross multiply
    645,529.10x = 890,811.66 × 351,169.58
  4. Step 4: Simplify right side
    645,529.10x = 312,825,952,925.17
  5. Step 5: Solve for x
    x = 312,825,952,925.17/645,529.10
  6. Step 6: Final answer
    x = 484,603.96

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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.