Home / 472,780.88-705,483.83-421,829.70

Finding the Fourth Proportional to 472,780.88, 705,483.83 and 421,829.70

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Solution

The fourth proportional to 472,780.88, 705,483.83 and 421,829.70 is: 629,454.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,780.88 : 705,483.83 = 421,829.70 : x
  2. Step 2: Convert to fraction form
    472,780.88/705,483.83 = 421,829.70/x
  3. Step 3: Cross multiply
    472,780.88x = 705,483.83 × 421,829.70
  4. Step 4: Simplify right side
    472,780.88x = 297,594,030,254.60
  5. Step 5: Solve for x
    x = 297,594,030,254.60/472,780.88
  6. Step 6: Final answer
    x = 629,454.46

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.