Home / 621,824.80-932,276.40-421,645.60

Finding the Fourth Proportional to 621,824.80, 932,276.40 and 421,645.60

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Solution

The fourth proportional to 621,824.80, 932,276.40 and 421,645.60 is: 632,155.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,824.80 : 932,276.40 = 421,645.60 : x
  2. Step 2: Convert to fraction form
    621,824.80/932,276.40 = 421,645.60/x
  3. Step 3: Cross multiply
    621,824.80x = 932,276.40 × 421,645.60
  4. Step 4: Simplify right side
    621,824.80x = 393,090,242,043.84
  5. Step 5: Solve for x
    x = 393,090,242,043.84/621,824.80
  6. Step 6: Final answer
    x = 632,155.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.