Home / 645,166.80-890,279.60-358,669.44

Finding the Fourth Proportional to 645,166.80, 890,279.60 and 358,669.44

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Solution

The fourth proportional to 645,166.80, 890,279.60 and 358,669.44 is: 494,935.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,166.80 : 890,279.60 = 358,669.44 : x
  2. Step 2: Convert to fraction form
    645,166.80/890,279.60 = 358,669.44/x
  3. Step 3: Cross multiply
    645,166.80x = 890,279.60 × 358,669.44
  4. Step 4: Simplify right side
    645,166.80x = 319,316,085,575.42
  5. Step 5: Solve for x
    x = 319,316,085,575.42/645,166.80
  6. Step 6: Final answer
    x = 494,935.71

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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.