Home / 429,082,681.60-643,624,022.40-257,090,003.20

Finding the Fourth Proportional to 429,082,681.60, 643,624,022.40 and 257,090,003.20

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Solution

The fourth proportional to 429,082,681.60, 643,624,022.40 and 257,090,003.20 is: 385,635,004.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,082,681.60 : 643,624,022.40 = 257,090,003.20 : x
  2. Step 2: Convert to fraction form
    429,082,681.60/643,624,022.40 = 257,090,003.20/x
  3. Step 3: Cross multiply
    429,082,681.60x = 643,624,022.40 × 257,090,003.20
  4. Step 4: Simplify right side
    429,082,681.60x = 165,469,301,978,412,864
  5. Step 5: Solve for x
    x = 165,469,301,978,412,864/429,082,681.60
  6. Step 6: Final answer
    x = 385,635,004.80

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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.