Home / 645,269.80-890,466.80-358,787.38

Finding the Fourth Proportional to 645,269.80, 890,466.80 and 358,787.38

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Solution

The fourth proportional to 645,269.80, 890,466.80 and 358,787.38 is: 495,123.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,269.80 : 890,466.80 = 358,787.38 : x
  2. Step 2: Convert to fraction form
    645,269.80/890,466.80 = 358,787.38/x
  3. Step 3: Cross multiply
    645,269.80x = 890,466.80 × 358,787.38
  4. Step 4: Simplify right side
    645,269.80x = 319,488,246,128.88
  5. Step 5: Solve for x
    x = 319,488,246,128.88/645,269.80
  6. Step 6: Final answer
    x = 495,123.51

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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.