Home / 772,820.78-1,065,260.37-609,210.38

Finding the Fourth Proportional to 772,820.78, 1,065,260.37 and 609,210.38

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Solution

The fourth proportional to 772,820.78, 1,065,260.37 and 609,210.38 is: 839,738.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,820.78 : 1,065,260.37 = 609,210.38 : x
  2. Step 2: Convert to fraction form
    772,820.78/1,065,260.37 = 609,210.38/x
  3. Step 3: Cross multiply
    772,820.78x = 1,065,260.37 × 609,210.38
  4. Step 4: Simplify right side
    772,820.78x = 648,967,674,806.64
  5. Step 5: Solve for x
    x = 648,967,674,806.64/772,820.78
  6. Step 6: Final answer
    x = 839,738.90

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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.