Home / 1,385,059.36-1,911,383.76-781,503.52

Finding the Fourth Proportional to 1,385,059.36, 1,911,383.76 and 781,503.52

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Solution

The fourth proportional to 1,385,059.36, 1,911,383.76 and 781,503.52 is: 1,078,475.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,059.36 : 1,911,383.76 = 781,503.52 : x
  2. Step 2: Convert to fraction form
    1,385,059.36/1,911,383.76 = 781,503.52/x
  3. Step 3: Cross multiply
    1,385,059.36x = 1,911,383.76 × 781,503.52
  4. Step 4: Simplify right side
    1,385,059.36x = 1,493,753,136,510.84
  5. Step 5: Solve for x
    x = 1,493,753,136,510.84/1,385,059.36
  6. Step 6: Final answer
    x = 1,078,475.90

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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.