Home / 644,185.10-966,277.65-455,228.30

Finding the Fourth Proportional to 644,185.10, 966,277.65 and 455,228.30

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Solution

The fourth proportional to 644,185.10, 966,277.65 and 455,228.30 is: 682,842.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,185.10 : 966,277.65 = 455,228.30 : x
  2. Step 2: Convert to fraction form
    644,185.10/966,277.65 = 455,228.30/x
  3. Step 3: Cross multiply
    644,185.10x = 966,277.65 × 455,228.30
  4. Step 4: Simplify right side
    644,185.10x = 439,876,931,937.50
  5. Step 5: Solve for x
    x = 439,876,931,937.50/644,185.10
  6. Step 6: Final answer
    x = 682,842.45

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Half scale
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Double scale
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Similar ratio
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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.