Home / 621,822.80-932,273.40-421,643.60

Finding the Fourth Proportional to 621,822.80, 932,273.40 and 421,643.60

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Solution

The fourth proportional to 621,822.80, 932,273.40 and 421,643.60 is: 632,152.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,822.80 : 932,273.40 = 421,643.60 : x
  2. Step 2: Convert to fraction form
    621,822.80/932,273.40 = 421,643.60/x
  3. Step 3: Cross multiply
    621,822.80x = 932,273.40 × 421,643.60
  4. Step 4: Simplify right side
    621,822.80x = 393,087,112,560.24
  5. Step 5: Solve for x
    x = 393,087,112,560.24/621,822.80
  6. Step 6: Final answer
    x = 632,152.94

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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.