Home / 431,367,409.40-647,051,114.10-323,871,985.40

Finding the Fourth Proportional to 431,367,409.40, 647,051,114.10 and 323,871,985.40

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Solution

The fourth proportional to 431,367,409.40, 647,051,114.10 and 323,871,985.40 is: 485,807,978.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,367,409.40 : 647,051,114.10 = 323,871,985.40 : x
  2. Step 2: Convert to fraction form
    431,367,409.40/647,051,114.10 = 323,871,985.40/x
  3. Step 3: Cross multiply
    431,367,409.40x = 647,051,114.10 × 323,871,985.40
  4. Step 4: Simplify right side
    431,367,409.40x = 209,561,728,978,848,928
  5. Step 5: Solve for x
    x = 209,561,728,978,848,928/431,367,409.40
  6. Step 6: Final answer
    x = 485,807,978.10

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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.