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Finding the Fourth Proportional to 660,666.10, 990,999.15 and 548,570.20

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Solution

The fourth proportional to 660,666.10, 990,999.15 and 548,570.20 is: 822,855.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,666.10 : 990,999.15 = 548,570.20 : x
  2. Step 2: Convert to fraction form
    660,666.10/990,999.15 = 548,570.20/x
  3. Step 3: Cross multiply
    660,666.10x = 990,999.15 × 548,570.20
  4. Step 4: Simplify right side
    660,666.10x = 543,632,601,915.33
  5. Step 5: Solve for x
    x = 543,632,601,915.33/660,666.10
  6. Step 6: Final answer
    x = 822,855.30

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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.