Home / 645,318.95-890,503.59-358,832.89

Finding the Fourth Proportional to 645,318.95, 890,503.59 and 358,832.89

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Solution

The fourth proportional to 645,318.95, 890,503.59 and 358,832.89 is: 495,169.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,318.95 : 890,503.59 = 358,832.89 : x
  2. Step 2: Convert to fraction form
    645,318.95/890,503.59 = 358,832.89/x
  3. Step 3: Cross multiply
    645,318.95x = 890,503.59 × 358,832.89
  4. Step 4: Simplify right side
    645,318.95x = 319,541,975,874.44
  5. Step 5: Solve for x
    x = 319,541,975,874.44/645,318.95
  6. Step 6: Final answer
    x = 495,169.05

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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.