Home / 388,667,820.13-583,001,730.21-129,883,040.36

Finding the Fourth Proportional to 388,667,820.13, 583,001,730.21 and 129,883,040.36

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Solution

The fourth proportional to 388,667,820.13, 583,001,730.21 and 129,883,040.36 is: 194,824,560.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,667,820.13 : 583,001,730.21 = 129,883,040.36 : x
  2. Step 2: Convert to fraction form
    388,667,820.13/583,001,730.21 = 129,883,040.36/x
  3. Step 3: Cross multiply
    388,667,820.13x = 583,001,730.21 × 129,883,040.36
  4. Step 4: Simplify right side
    388,667,820.13x = 75,722,037,254,815,264
  5. Step 5: Solve for x
    x = 75,722,037,254,815,264/388,667,820.13
  6. Step 6: Final answer
    x = 194,824,560.55

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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.