Home / 505,490,630.40-758,235,945.60-423,861,292.80

Finding the Fourth Proportional to 505,490,630.40, 758,235,945.60 and 423,861,292.80

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Solution

The fourth proportional to 505,490,630.40, 758,235,945.60 and 423,861,292.80 is: 635,791,939.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,490,630.40 : 758,235,945.60 = 423,861,292.80 : x
  2. Step 2: Convert to fraction form
    505,490,630.40/758,235,945.60 = 423,861,292.80/x
  3. Step 3: Cross multiply
    505,490,630.40x = 758,235,945.60 × 423,861,292.80
  4. Step 4: Simplify right side
    505,490,630.40x = 321,386,868,149,446,464
  5. Step 5: Solve for x
    x = 321,386,868,149,446,464/505,490,630.40
  6. Step 6: Final answer
    x = 635,791,939.20

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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.