Home / 1,380,745,059.37-1,905,428,109.06-745,665,490.06

Finding the Fourth Proportional to 1,380,745,059.37, 1,905,428,109.06 and 745,665,490.06

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Solution

The fourth proportional to 1,380,745,059.37, 1,905,428,109.06 and 745,665,490.06 is: 1,029,018,336.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,745,059.37 : 1,905,428,109.06 = 745,665,490.06 : x
  2. Step 2: Convert to fraction form
    1,380,745,059.37/1,905,428,109.06 = 745,665,490.06/x
  3. Step 3: Cross multiply
    1,380,745,059.37x = 1,905,428,109.06 × 745,665,490.06
  4. Step 4: Simplify right side
    1,380,745,059.37x = 1,420,811,984,716,323,840
  5. Step 5: Solve for x
    x = 1,420,811,984,716,323,840/1,380,745,059.37
  6. Step 6: Final answer
    x = 1,029,018,336.93

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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.