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Finding the Fourth Proportional to 662,428.40, 993,772.20 and 283,348.40

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Solution

The fourth proportional to 662,428.40, 993,772.20 and 283,348.40 is: 425,078.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,428.40 : 993,772.20 = 283,348.40 : x
  2. Step 2: Convert to fraction form
    662,428.40/993,772.20 = 283,348.40/x
  3. Step 3: Cross multiply
    662,428.40x = 993,772.20 × 283,348.40
  4. Step 4: Simplify right side
    662,428.40x = 281,583,762,834.48
  5. Step 5: Solve for x
    x = 281,583,762,834.48/662,428.40
  6. Step 6: Final answer
    x = 425,078.04

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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.