Home / 1,215,785,338.40-1,677,785,201.88-658,868,385.46

Finding the Fourth Proportional to 1,215,785,338.40, 1,677,785,201.88 and 658,868,385.46

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Solution

The fourth proportional to 1,215,785,338.40, 1,677,785,201.88 and 658,868,385.46 is: 909,239,149.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,785,338.40 : 1,677,785,201.88 = 658,868,385.46 : x
  2. Step 2: Convert to fraction form
    1,215,785,338.40/1,677,785,201.88 = 658,868,385.46/x
  3. Step 3: Cross multiply
    1,215,785,338.40x = 1,677,785,201.88 × 658,868,385.46
  4. Step 4: Simplify right side
    1,215,785,338.40x = 1,105,439,627,111,355,904
  5. Step 5: Solve for x
    x = 1,105,439,627,111,355,904/1,215,785,338.40
  6. Step 6: Final answer
    x = 909,239,149.54

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1.5x scale

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.