Home / 869,120,999.20-1,303,681,498.80-409,955,975.20

Finding the Fourth Proportional to 869,120,999.20, 1,303,681,498.80 and 409,955,975.20

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Solution

The fourth proportional to 869,120,999.20, 1,303,681,498.80 and 409,955,975.20 is: 614,933,962.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,120,999.20 : 1,303,681,498.80 = 409,955,975.20 : x
  2. Step 2: Convert to fraction form
    869,120,999.20/1,303,681,498.80 = 409,955,975.20/x
  3. Step 3: Cross multiply
    869,120,999.20x = 1,303,681,498.80 × 409,955,975.20
  4. Step 4: Simplify right side
    869,120,999.20x = 534,452,020,190,751,616
  5. Step 5: Solve for x
    x = 534,452,020,190,751,616/869,120,999.20
  6. Step 6: Final answer
    x = 614,933,962.80

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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.