Home / 1,238,453,655.30-1,709,066,287.80-681,536,705.40

Finding the Fourth Proportional to 1,238,453,655.30, 1,709,066,287.80 and 681,536,705.40

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Solution

The fourth proportional to 1,238,453,655.30, 1,709,066,287.80 and 681,536,705.40 is: 940,520,787.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,453,655.30 : 1,709,066,287.80 = 681,536,705.40 : x
  2. Step 2: Convert to fraction form
    1,238,453,655.30/1,709,066,287.80 = 681,536,705.40/x
  3. Step 3: Cross multiply
    1,238,453,655.30x = 1,709,066,287.80 × 681,536,705.40
  4. Step 4: Simplify right side
    1,238,453,655.30x = 1,164,791,407,097,420,032
  5. Step 5: Solve for x
    x = 1,164,791,407,097,420,032/1,238,453,655.30
  6. Step 6: Final answer
    x = 940,520,787.45

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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.