Home / 621,970.44-858,584.04-418,139.58

Finding the Fourth Proportional to 621,970.44, 858,584.04 and 418,139.58

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Solution

The fourth proportional to 621,970.44, 858,584.04 and 418,139.58 is: 577,210.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,970.44 : 858,584.04 = 418,139.58 : x
  2. Step 2: Convert to fraction form
    621,970.44/858,584.04 = 418,139.58/x
  3. Step 3: Cross multiply
    621,970.44x = 858,584.04 × 418,139.58
  4. Step 4: Simplify right side
    621,970.44x = 359,007,971,531.97
  5. Step 5: Solve for x
    x = 359,007,971,531.97/621,970.44
  6. Step 6: Final answer
    x = 577,210.67

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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.