Home / 772,364.78-1,065,926.53-428,308.62

Finding the Fourth Proportional to 772,364.78, 1,065,926.53 and 428,308.62

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Solution

The fourth proportional to 772,364.78, 1,065,926.53 and 428,308.62 is: 591,100.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,364.78 : 1,065,926.53 = 428,308.62 : x
  2. Step 2: Convert to fraction form
    772,364.78/1,065,926.53 = 428,308.62/x
  3. Step 3: Cross multiply
    772,364.78x = 1,065,926.53 × 428,308.62
  4. Step 4: Simplify right side
    772,364.78x = 456,545,515,756.06
  5. Step 5: Solve for x
    x = 456,545,515,756.06/772,364.78
  6. Step 6: Final answer
    x = 591,100.90

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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.