Home / 1,238,918,936.64-1,858,398,110.64-689,712,148.32

Finding the Fourth Proportional to 1,238,918,936.64, 1,858,398,110.64 and 689,712,148.32

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Solution

The fourth proportional to 1,238,918,936.64, 1,858,398,110.64 and 689,712,148.32 is: 1,034,579,192.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,918,936.64 : 1,858,398,110.64 = 689,712,148.32 : x
  2. Step 2: Convert to fraction form
    1,238,918,936.64/1,858,398,110.64 = 689,712,148.32/x
  3. Step 3: Cross multiply
    1,238,918,936.64x = 1,858,398,110.64 × 689,712,148.32
  4. Step 4: Simplify right side
    1,238,918,936.64x = 1,281,759,753,323,343,616
  5. Step 5: Solve for x
    x = 1,281,759,753,323,343,616/1,238,918,936.64
  6. Step 6: Final answer
    x = 1,034,579,192.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.