Home / 290,400,276.80-435,600,415.20-263,526,420.80

Finding the Fourth Proportional to 290,400,276.80, 435,600,415.20 and 263,526,420.80

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Solution

The fourth proportional to 290,400,276.80, 435,600,415.20 and 263,526,420.80 is: 395,289,631.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,400,276.80 : 435,600,415.20 = 263,526,420.80 : x
  2. Step 2: Convert to fraction form
    290,400,276.80/435,600,415.20 = 263,526,420.80/x
  3. Step 3: Cross multiply
    290,400,276.80x = 435,600,415.20 × 263,526,420.80
  4. Step 4: Simplify right side
    290,400,276.80x = 114,792,218,316,649,920
  5. Step 5: Solve for x
    x = 114,792,218,316,649,920/290,400,276.80
  6. Step 6: Final answer
    x = 395,289,631.20

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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.