Home / 388,667,816.63-583,001,724.96-129,883,036.86

Finding the Fourth Proportional to 388,667,816.63, 583,001,724.96 and 129,883,036.86

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Solution

The fourth proportional to 388,667,816.63, 583,001,724.96 and 129,883,036.86 is: 194,824,555.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,667,816.63 : 583,001,724.96 = 129,883,036.86 : x
  2. Step 2: Convert to fraction form
    388,667,816.63/583,001,724.96 = 129,883,036.86/x
  3. Step 3: Cross multiply
    388,667,816.63x = 583,001,724.96 × 129,883,036.86
  4. Step 4: Simplify right side
    388,667,816.63x = 75,722,034,532,423,264
  5. Step 5: Solve for x
    x = 75,722,034,532,423,264/388,667,816.63
  6. Step 6: Final answer
    x = 194,824,555.30

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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.