Home / 648,731.60-973,190.40-199,490.20

Finding the Fourth Proportional to 648,731.60, 973,190.40 and 199,490.20

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Solution

The fourth proportional to 648,731.60, 973,190.40 and 199,490.20 is: 299,263.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,731.60 : 973,190.40 = 199,490.20 : x
  2. Step 2: Convert to fraction form
    648,731.60/973,190.40 = 199,490.20/x
  3. Step 3: Cross multiply
    648,731.60x = 973,190.40 × 199,490.20
  4. Step 4: Simplify right side
    648,731.60x = 194,141,947,534.08
  5. Step 5: Solve for x
    x = 194,141,947,534.08/648,731.60
  6. Step 6: Final answer
    x = 299,263.90

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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.