Home / 420,552,485.60-630,828,728.40-275,433,663.20

Finding the Fourth Proportional to 420,552,485.60, 630,828,728.40 and 275,433,663.20

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Solution

The fourth proportional to 420,552,485.60, 630,828,728.40 and 275,433,663.20 is: 413,150,494.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,552,485.60 : 630,828,728.40 = 275,433,663.20 : x
  2. Step 2: Convert to fraction form
    420,552,485.60/630,828,728.40 = 275,433,663.20/x
  3. Step 3: Cross multiply
    420,552,485.60x = 630,828,728.40 × 275,433,663.20
  4. Step 4: Simplify right side
    420,552,485.60x = 173,751,467,515,009,856
  5. Step 5: Solve for x
    x = 173,751,467,515,009,856/420,552,485.60
  6. Step 6: Final answer
    x = 413,150,494.80

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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.