Home / 428,896,548.18-643,238,534.07-122,191,318.26

Finding the Fourth Proportional to 428,896,548.18, 643,238,534.07 and 122,191,318.26

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Solution

The fourth proportional to 428,896,548.18, 643,238,534.07 and 122,191,318.26 is: 183,256,696.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,896,548.18 : 643,238,534.07 = 122,191,318.26 : x
  2. Step 2: Convert to fraction form
    428,896,548.18/643,238,534.07 = 122,191,318.26/x
  3. Step 3: Cross multiply
    428,896,548.18x = 643,238,534.07 × 122,191,318.26
  4. Step 4: Simplify right side
    428,896,548.18x = 78,598,164,433,643,232
  5. Step 5: Solve for x
    x = 78,598,164,433,643,232/428,896,548.18
  6. Step 6: Final answer
    x = 183,256,696.21

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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.