Home / 645,188.60-890,358.98-369,635.70

Finding the Fourth Proportional to 645,188.60, 890,358.98 and 369,635.70

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Solution

The fourth proportional to 645,188.60, 890,358.98 and 369,635.70 is: 510,096.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,188.60 : 890,358.98 = 369,635.70 : x
  2. Step 2: Convert to fraction form
    645,188.60/890,358.98 = 369,635.70/x
  3. Step 3: Cross multiply
    645,188.60x = 890,358.98 × 369,635.70
  4. Step 4: Simplify right side
    645,188.60x = 329,108,462,975.41
  5. Step 5: Solve for x
    x = 329,108,462,975.41/645,188.60
  6. Step 6: Final answer
    x = 510,096.53

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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.