Home / 1,383,402.80-1,909,099.26-771,595.20

Finding the Fourth Proportional to 1,383,402.80, 1,909,099.26 and 771,595.20

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Solution

The fourth proportional to 1,383,402.80, 1,909,099.26 and 771,595.20 is: 1,064,803.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,402.80 : 1,909,099.26 = 771,595.20 : x
  2. Step 2: Convert to fraction form
    1,383,402.80/1,909,099.26 = 771,595.20/x
  3. Step 3: Cross multiply
    1,383,402.80x = 1,909,099.26 × 771,595.20
  4. Step 4: Simplify right side
    1,383,402.80x = 1,473,051,825,339.55
  5. Step 5: Solve for x
    x = 1,473,051,825,339.55/1,383,402.80
  6. Step 6: Final answer
    x = 1,064,803.27

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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.