Home / 831,354,612.56-1,147,222,685.40-455,010,430.76

Finding the Fourth Proportional to 831,354,612.56, 1,147,222,685.40 and 455,010,430.76

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Solution

The fourth proportional to 831,354,612.56, 1,147,222,685.40 and 455,010,430.76 is: 627,888,845.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,354,612.56 : 1,147,222,685.40 = 455,010,430.76 : x
  2. Step 2: Convert to fraction form
    831,354,612.56/1,147,222,685.40 = 455,010,430.76/x
  3. Step 3: Cross multiply
    831,354,612.56x = 1,147,222,685.40 × 455,010,430.76
  4. Step 4: Simplify right side
    831,354,612.56x = 521,998,288,261,497,984
  5. Step 5: Solve for x
    x = 521,998,288,261,497,984/831,354,612.56
  6. Step 6: Final answer
    x = 627,888,845.96

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Double scale
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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.