Home / 450,056.01-621,077.52-256,458.21

Finding the Fourth Proportional to 450,056.01, 621,077.52 and 256,458.21

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Solution

The fourth proportional to 450,056.01, 621,077.52 and 256,458.21 is: 353,912.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,056.01 : 621,077.52 = 256,458.21 : x
  2. Step 2: Convert to fraction form
    450,056.01/621,077.52 = 256,458.21/x
  3. Step 3: Cross multiply
    450,056.01x = 621,077.52 × 256,458.21
  4. Step 4: Simplify right side
    450,056.01x = 159,280,429,050.44
  5. Step 5: Solve for x
    x = 159,280,429,050.44/450,056.01
  6. Step 6: Final answer
    x = 353,912.46

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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.