Home / 781,330,130.65-1,078,207,682.40-442,231,325.60

Finding the Fourth Proportional to 781,330,130.65, 1,078,207,682.40 and 442,231,325.60

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Solution

The fourth proportional to 781,330,130.65, 1,078,207,682.40 and 442,231,325.60 is: 610,263,439.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,330,130.65 : 1,078,207,682.40 = 442,231,325.60 : x
  2. Step 2: Convert to fraction form
    781,330,130.65/1,078,207,682.40 = 442,231,325.60/x
  3. Step 3: Cross multiply
    781,330,130.65x = 1,078,207,682.40 × 442,231,325.60
  4. Step 4: Simplify right side
    781,330,130.65x = 476,817,212,654,464,832
  5. Step 5: Solve for x
    x = 476,817,212,654,464,832/781,330,130.65
  6. Step 6: Final answer
    x = 610,263,439.17

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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.