Home / 1,315,700.42-1,971,961.20-640,770.35

Finding the Fourth Proportional to 1,315,700.42, 1,971,961.20 and 640,770.35

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Solution

The fourth proportional to 1,315,700.42, 1,971,961.20 and 640,770.35 is: 960,381.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,700.42 : 1,971,961.20 = 640,770.35 : x
  2. Step 2: Convert to fraction form
    1,315,700.42/1,971,961.20 = 640,770.35/x
  3. Step 3: Cross multiply
    1,315,700.42x = 1,971,961.20 × 640,770.35
  4. Step 4: Simplify right side
    1,315,700.42x = 1,263,574,258,450.61
  5. Step 5: Solve for x
    x = 1,263,574,258,450.61/1,315,700.42
  6. Step 6: Final answer
    x = 960,381.44

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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.