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Finding the Fourth Proportional to 661,237.20, 990,300.60 and 661,237.20

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Solution

The fourth proportional to 661,237.20, 990,300.60 and 661,237.20 is: 990,300.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,237.20 : 990,300.60 = 661,237.20 : x
  2. Step 2: Convert to fraction form
    661,237.20/990,300.60 = 661,237.20/x
  3. Step 3: Cross multiply
    661,237.20x = 990,300.60 × 661,237.20
  4. Step 4: Simplify right side
    661,237.20x = 654,823,595,902.32
  5. Step 5: Solve for x
    x = 654,823,595,902.32/661,237.20
  6. Step 6: Final answer
    x = 990,300.60

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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.