Home / 1,315,525.76-1,971,699.42-640,595.69

Finding the Fourth Proportional to 1,315,525.76, 1,971,699.42 and 640,595.69

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Solution

The fourth proportional to 1,315,525.76, 1,971,699.42 and 640,595.69 is: 960,119.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,525.76 : 1,971,699.42 = 640,595.69 : x
  2. Step 2: Convert to fraction form
    1,315,525.76/1,971,699.42 = 640,595.69/x
  3. Step 3: Cross multiply
    1,315,525.76x = 1,971,699.42 × 640,595.69
  4. Step 4: Simplify right side
    1,315,525.76x = 1,263,062,146,761.76
  5. Step 5: Solve for x
    x = 1,263,062,146,761.76/1,315,525.76
  6. Step 6: Final answer
    x = 960,119.66

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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.