Home / 621,907.63-932,928.10-172,630.40

Finding the Fourth Proportional to 621,907.63, 932,928.10 and 172,630.40

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Solution

The fourth proportional to 621,907.63, 932,928.10 and 172,630.40 is: 258,964.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,907.63 : 932,928.10 = 172,630.40 : x
  2. Step 2: Convert to fraction form
    621,907.63/932,928.10 = 172,630.40/x
  3. Step 3: Cross multiply
    621,907.63x = 932,928.10 × 172,630.40
  4. Step 4: Simplify right side
    621,907.63x = 161,051,745,978.02
  5. Step 5: Solve for x
    x = 161,051,745,978.02/621,907.63
  6. Step 6: Final answer
    x = 258,964.10

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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.