Home / 420,270,460.80-630,405,691.20-133,056,124.80

Finding the Fourth Proportional to 420,270,460.80, 630,405,691.20 and 133,056,124.80

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Solution

The fourth proportional to 420,270,460.80, 630,405,691.20 and 133,056,124.80 is: 199,584,187.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,270,460.80 : 630,405,691.20 = 133,056,124.80 : x
  2. Step 2: Convert to fraction form
    420,270,460.80/630,405,691.20 = 133,056,124.80/x
  3. Step 3: Cross multiply
    420,270,460.80x = 630,405,691.20 × 133,056,124.80
  4. Step 4: Simplify right side
    420,270,460.80x = 83,879,338,322,937,472
  5. Step 5: Solve for x
    x = 83,879,338,322,937,472/420,270,460.80
  6. Step 6: Final answer
    x = 199,584,187.20

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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.