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Finding the Fourth Proportional to 639,000.60, 957,686.85 and 339,624.60

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Solution

The fourth proportional to 639,000.60, 957,686.85 and 339,624.60 is: 509,004.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,000.60 : 957,686.85 = 339,624.60 : x
  2. Step 2: Convert to fraction form
    639,000.60/957,686.85 = 339,624.60/x
  3. Step 3: Cross multiply
    639,000.60x = 957,686.85 × 339,624.60
  4. Step 4: Simplify right side
    639,000.60x = 325,254,013,356.51
  5. Step 5: Solve for x
    x = 325,254,013,356.51/639,000.60
  6. Step 6: Final answer
    x = 509,004.24

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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.