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Finding the Fourth Proportional to 398,492.80, 597,350.40 and 356,502.40

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Solution

The fourth proportional to 398,492.80, 597,350.40 and 356,502.40 is: 534,405.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,492.80 : 597,350.40 = 356,502.40 : x
  2. Step 2: Convert to fraction form
    398,492.80/597,350.40 = 356,502.40/x
  3. Step 3: Cross multiply
    398,492.80x = 597,350.40 × 356,502.40
  4. Step 4: Simplify right side
    398,492.80x = 212,956,851,240.96
  5. Step 5: Solve for x
    x = 212,956,851,240.96/398,492.80
  6. Step 6: Final answer
    x = 534,405.77

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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.