Home / 1,207,229,672.40-1,808,612,456.40-688,118,103.60

Finding the Fourth Proportional to 1,207,229,672.40, 1,808,612,456.40 and 688,118,103.60

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Solution

The fourth proportional to 1,207,229,672.40, 1,808,612,456.40 and 688,118,103.60 is: 1,030,904,890.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,229,672.40 : 1,808,612,456.40 = 688,118,103.60 : x
  2. Step 2: Convert to fraction form
    1,207,229,672.40/1,808,612,456.40 = 688,118,103.60/x
  3. Step 3: Cross multiply
    1,207,229,672.40x = 1,808,612,456.40 × 688,118,103.60
  4. Step 4: Simplify right side
    1,207,229,672.40x = 1,244,538,973,645,305,856
  5. Step 5: Solve for x
    x = 1,244,538,973,645,305,856/1,207,229,672.40
  6. Step 6: Final answer
    x = 1,030,904,890.84

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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.