Home / 772,392.87-1,065,935.90-428,206.89

Finding the Fourth Proportional to 772,392.87, 1,065,935.90 and 428,206.89

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Solution

The fourth proportional to 772,392.87, 1,065,935.90 and 428,206.89 is: 590,944.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,392.87 : 1,065,935.90 = 428,206.89 : x
  2. Step 2: Convert to fraction form
    772,392.87/1,065,935.90 = 428,206.89/x
  3. Step 3: Cross multiply
    772,392.87x = 1,065,935.90 × 428,206.89
  4. Step 4: Simplify right side
    772,392.87x = 456,441,096,678.35
  5. Step 5: Solve for x
    x = 456,441,096,678.35/772,392.87
  6. Step 6: Final answer
    x = 590,944.21

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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.