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Finding the Fourth Proportional to 521,518.60, 783,228.30 and 456,200.20

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Solution

The fourth proportional to 521,518.60, 783,228.30 and 456,200.20 is: 685,131.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,518.60 : 783,228.30 = 456,200.20 : x
  2. Step 2: Convert to fraction form
    521,518.60/783,228.30 = 456,200.20/x
  3. Step 3: Cross multiply
    521,518.60x = 783,228.30 × 456,200.20
  4. Step 4: Simplify right side
    521,518.60x = 357,308,907,105.66
  5. Step 5: Solve for x
    x = 357,308,907,105.66/521,518.60
  6. Step 6: Final answer
    x = 685,131.67

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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.