Home / 772,820.28-1,065,259.68-609,209.88

Finding the Fourth Proportional to 772,820.28, 1,065,259.68 and 609,209.88

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Solution

The fourth proportional to 772,820.28, 1,065,259.68 and 609,209.88 is: 839,738.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,820.28 : 1,065,259.68 = 609,209.88 : x
  2. Step 2: Convert to fraction form
    772,820.28/1,065,259.68 = 609,209.88/x
  3. Step 3: Cross multiply
    772,820.28x = 1,065,259.68 × 609,209.88
  4. Step 4: Simplify right side
    772,820.28x = 648,966,721,821.64
  5. Step 5: Solve for x
    x = 648,966,721,821.64/772,820.28
  6. Step 6: Final answer
    x = 839,738.21

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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.