Home / 772,921.17-1,066,630.23-428,809.28

Finding the Fourth Proportional to 772,921.17, 1,066,630.23 and 428,809.28

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Solution

The fourth proportional to 772,921.17, 1,066,630.23 and 428,809.28 is: 591,756.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,921.17 : 1,066,630.23 = 428,809.28 : x
  2. Step 2: Convert to fraction form
    772,921.17/1,066,630.23 = 428,809.28/x
  3. Step 3: Cross multiply
    772,921.17x = 1,066,630.23 × 428,809.28
  4. Step 4: Simplify right side
    772,921.17x = 457,380,935,689.04
  5. Step 5: Solve for x
    x = 457,380,935,689.04/772,921.17
  6. Step 6: Final answer
    x = 591,756.25

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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.