Home / 626,066.19-863,971.34-354,128.23

Finding the Fourth Proportional to 626,066.19, 863,971.34 and 354,128.23

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Solution

The fourth proportional to 626,066.19, 863,971.34 and 354,128.23 is: 488,696.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,066.19 : 863,971.34 = 354,128.23 : x
  2. Step 2: Convert to fraction form
    626,066.19/863,971.34 = 354,128.23/x
  3. Step 3: Cross multiply
    626,066.19x = 863,971.34 × 354,128.23
  4. Step 4: Simplify right side
    626,066.19x = 305,956,641,404.93
  5. Step 5: Solve for x
    x = 305,956,641,404.93/626,066.19
  6. Step 6: Final answer
    x = 488,696.96

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Double scale
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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.