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Finding the Fourth Proportional to 648,728.60, 973,185.90 and 199,487.20

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Solution

The fourth proportional to 648,728.60, 973,185.90 and 199,487.20 is: 299,259.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,728.60 : 973,185.90 = 199,487.20 : x
  2. Step 2: Convert to fraction form
    648,728.60/973,185.90 = 199,487.20/x
  3. Step 3: Cross multiply
    648,728.60x = 973,185.90 × 199,487.20
  4. Step 4: Simplify right side
    648,728.60x = 194,138,130,270.48
  5. Step 5: Solve for x
    x = 194,138,130,270.48/648,728.60
  6. Step 6: Final answer
    x = 299,259.40

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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.