Home / 1,268,089,420.84-1,749,976,075.40-711,160,507.24

Finding the Fourth Proportional to 1,268,089,420.84, 1,749,976,075.40 and 711,160,507.24

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Solution

The fourth proportional to 1,268,089,420.84, 1,749,976,075.40 and 711,160,507.24 is: 981,408,608.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268,089,420.84 : 1,749,976,075.40 = 711,160,507.24 : x
  2. Step 2: Convert to fraction form
    1,268,089,420.84/1,749,976,075.40 = 711,160,507.24/x
  3. Step 3: Cross multiply
    1,268,089,420.84x = 1,749,976,075.40 × 711,160,507.24
  4. Step 4: Simplify right side
    1,268,089,420.84x = 1,244,513,873,439,328,512
  5. Step 5: Solve for x
    x = 1,244,513,873,439,328,512/1,268,089,420.84
  6. Step 6: Final answer
    x = 981,408,608.09

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Double scale
Find fourth proportional to 1,268,089,421.84, 1,749,976,076.78 and 711,160,508.24
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.