Home / 505,519,711.20-758,279,566.80-423,890,373.60

Finding the Fourth Proportional to 505,519,711.20, 758,279,566.80 and 423,890,373.60

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Solution

The fourth proportional to 505,519,711.20, 758,279,566.80 and 423,890,373.60 is: 635,835,560.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,519,711.20 : 758,279,566.80 = 423,890,373.60 : x
  2. Step 2: Convert to fraction form
    505,519,711.20/758,279,566.80 = 423,890,373.60/x
  3. Step 3: Cross multiply
    505,519,711.20x = 758,279,566.80 × 423,890,373.60
  4. Step 4: Simplify right side
    505,519,711.20x = 321,427,408,864,098,176
  5. Step 5: Solve for x
    x = 321,427,408,864,098,176/505,519,711.20
  6. Step 6: Final answer
    x = 635,835,560.40

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1.5x scale

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.