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Finding the Fourth Proportional to 664,259.84, 996,921.12 and 348,902.72

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Solution

The fourth proportional to 664,259.84, 996,921.12 and 348,902.72 is: 523,633.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,259.84 : 996,921.12 = 348,902.72 : x
  2. Step 2: Convert to fraction form
    664,259.84/996,921.12 = 348,902.72/x
  3. Step 3: Cross multiply
    664,259.84x = 996,921.12 × 348,902.72
  4. Step 4: Simplify right side
    664,259.84x = 347,828,490,393.45
  5. Step 5: Solve for x
    x = 347,828,490,393.45/664,259.84
  6. Step 6: Final answer
    x = 523,633.18

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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.