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Finding the Fourth Proportional to 666,097.81, 919,220.16 and 367,740.91

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Solution

The fourth proportional to 666,097.81, 919,220.16 and 367,740.91 is: 507,485.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,097.81 : 919,220.16 = 367,740.91 : x
  2. Step 2: Convert to fraction form
    666,097.81/919,220.16 = 367,740.91/x
  3. Step 3: Cross multiply
    666,097.81x = 919,220.16 × 367,740.91
  4. Step 4: Simplify right side
    666,097.81x = 338,034,858,128.75
  5. Step 5: Solve for x
    x = 338,034,858,128.75/666,097.81
  6. Step 6: Final answer
    x = 507,485.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.