Home / 767,953.21-1,059,775.88-428,421.46

Finding the Fourth Proportional to 767,953.21, 1,059,775.88 and 428,421.46

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Solution

The fourth proportional to 767,953.21, 1,059,775.88 and 428,421.46 is: 591,221.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,953.21 : 1,059,775.88 = 428,421.46 : x
  2. Step 2: Convert to fraction form
    767,953.21/1,059,775.88 = 428,421.46/x
  3. Step 3: Cross multiply
    767,953.21x = 1,059,775.88 × 428,421.46
  4. Step 4: Simplify right side
    767,953.21x = 454,030,722,341.40
  5. Step 5: Solve for x
    x = 454,030,722,341.40/767,953.21
  6. Step 6: Final answer
    x = 591,221.86

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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.