Home / 388,667,821.80-583,001,732.72-129,883,042.02

Finding the Fourth Proportional to 388,667,821.80, 583,001,732.72 and 129,883,042.02

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Solution

The fourth proportional to 388,667,821.80, 583,001,732.72 and 129,883,042.02 is: 194,824,563.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,667,821.80 : 583,001,732.72 = 129,883,042.02 : x
  2. Step 2: Convert to fraction form
    388,667,821.80/583,001,732.72 = 129,883,042.02/x
  3. Step 3: Cross multiply
    388,667,821.80x = 583,001,732.72 × 129,883,042.02
  4. Step 4: Simplify right side
    388,667,821.80x = 75,722,038,548,604,576
  5. Step 5: Solve for x
    x = 75,722,038,548,604,576/388,667,821.80
  6. Step 6: Final answer
    x = 194,824,563.04

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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.