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Finding the Fourth Proportional to 661,990.20, 993,395.70 and 346,673.40

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Solution

The fourth proportional to 661,990.20, 993,395.70 and 346,673.40 is: 520,225.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,990.20 : 993,395.70 = 346,673.40 : x
  2. Step 2: Convert to fraction form
    661,990.20/993,395.70 = 346,673.40/x
  3. Step 3: Cross multiply
    661,990.20x = 993,395.70 × 346,673.40
  4. Step 4: Simplify right side
    661,990.20x = 344,383,864,864.38
  5. Step 5: Solve for x
    x = 344,383,864,864.38/661,990.20
  6. Step 6: Final answer
    x = 520,225.02

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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.