Home / 645,529.86-890,828.83-359,049.95

Finding the Fourth Proportional to 645,529.86, 890,828.83 and 359,049.95

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Solution

The fourth proportional to 645,529.86, 890,828.83 and 359,049.95 is: 495,487.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,529.86 : 890,828.83 = 359,049.95 : x
  2. Step 2: Convert to fraction form
    645,529.86/890,828.83 = 359,049.95/x
  3. Step 3: Cross multiply
    645,529.86x = 890,828.83 × 359,049.95
  4. Step 4: Simplify right side
    645,529.86x = 319,852,048,216.50
  5. Step 5: Solve for x
    x = 319,852,048,216.50/645,529.86
  6. Step 6: Final answer
    x = 495,487.61

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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.