Home / 874,820.74-1,207,278.21-512,210.67

Finding the Fourth Proportional to 874,820.74, 1,207,278.21 and 512,210.67

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Solution

The fourth proportional to 874,820.74, 1,207,278.21 and 512,210.67 is: 706,865.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,820.74 : 1,207,278.21 = 512,210.67 : x
  2. Step 2: Convert to fraction form
    874,820.74/1,207,278.21 = 512,210.67/x
  3. Step 3: Cross multiply
    874,820.74x = 1,207,278.21 × 512,210.67
  4. Step 4: Simplify right side
    874,820.74x = 618,380,780,820.50
  5. Step 5: Solve for x
    x = 618,380,780,820.50/874,820.74
  6. Step 6: Final answer
    x = 706,865.71

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1.5x scale

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.