Home / 421,011,111.16-631,576,010.46-129,901,903.12

Finding the Fourth Proportional to 421,011,111.16, 631,576,010.46 and 129,901,903.12

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Solution

The fourth proportional to 421,011,111.16, 631,576,010.46 and 129,901,903.12 is: 194,871,165.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,011,111.16 : 631,576,010.46 = 129,901,903.12 : x
  2. Step 2: Convert to fraction form
    421,011,111.16/631,576,010.46 = 129,901,903.12/x
  3. Step 3: Cross multiply
    421,011,111.16x = 631,576,010.46 × 129,901,903.12
  4. Step 4: Simplify right side
    421,011,111.16x = 82,042,925,723,691,040
  5. Step 5: Solve for x
    x = 82,042,925,723,691,040/421,011,111.16
  6. Step 6: Final answer
    x = 194,871,165.03

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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.