Home / 1,405,808.40-2,108,712.60-647,648.40

Finding the Fourth Proportional to 1,405,808.40, 2,108,712.60 and 647,648.40

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Solution

The fourth proportional to 1,405,808.40, 2,108,712.60 and 647,648.40 is: 971,472.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,808.40 : 2,108,712.60 = 647,648.40 : x
  2. Step 2: Convert to fraction form
    1,405,808.40/2,108,712.60 = 647,648.40/x
  3. Step 3: Cross multiply
    1,405,808.40x = 2,108,712.60 × 647,648.40
  4. Step 4: Simplify right side
    1,405,808.40x = 1,365,704,341,449.84
  5. Step 5: Solve for x
    x = 1,365,704,341,449.84/1,405,808.40
  6. Step 6: Final answer
    x = 971,472.60

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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.