Home / 626,207.04-864,139.19-354,279.57

Finding the Fourth Proportional to 626,207.04, 864,139.19 and 354,279.57

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Solution

The fourth proportional to 626,207.04, 864,139.19 and 354,279.57 is: 488,890.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,207.04 : 864,139.19 = 354,279.57 : x
  2. Step 2: Convert to fraction form
    626,207.04/864,139.19 = 354,279.57/x
  3. Step 3: Cross multiply
    626,207.04x = 864,139.19 × 354,279.57
  4. Step 4: Simplify right side
    626,207.04x = 306,146,858,881.95
  5. Step 5: Solve for x
    x = 306,146,858,881.95/626,207.04
  6. Step 6: Final answer
    x = 488,890.80

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Double scale
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Similar ratio
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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.