Home / 651,677.20-977,515.80-402,499.60

Finding the Fourth Proportional to 651,677.20, 977,515.80 and 402,499.60

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Solution

The fourth proportional to 651,677.20, 977,515.80 and 402,499.60 is: 603,749.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,677.20 : 977,515.80 = 402,499.60 : x
  2. Step 2: Convert to fraction form
    651,677.20/977,515.80 = 402,499.60/x
  3. Step 3: Cross multiply
    651,677.20x = 977,515.80 × 402,499.60
  4. Step 4: Simplify right side
    651,677.20x = 393,449,718,493.68
  5. Step 5: Solve for x
    x = 393,449,718,493.68/651,677.20
  6. Step 6: Final answer
    x = 603,749.40

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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.