Home / 831,708,539.79-1,147,712,313.89-455,292,309.40

Finding the Fourth Proportional to 831,708,539.79, 1,147,712,313.89 and 455,292,309.40

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Solution

The fourth proportional to 831,708,539.79, 1,147,712,313.89 and 455,292,309.40 is: 628,278,495.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,708,539.79 : 1,147,712,313.89 = 455,292,309.40 : x
  2. Step 2: Convert to fraction form
    831,708,539.79/1,147,712,313.89 = 455,292,309.40/x
  3. Step 3: Cross multiply
    831,708,539.79x = 1,147,712,313.89 × 455,292,309.40
  4. Step 4: Simplify right side
    831,708,539.79x = 522,544,589,917,795,840
  5. Step 5: Solve for x
    x = 522,544,589,917,795,840/831,708,539.79
  6. Step 6: Final answer
    x = 628,278,495.31

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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.