Home / 768,018.16-1,059,865.32-428,479.12

Finding the Fourth Proportional to 768,018.16, 1,059,865.32 and 428,479.12

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Solution

The fourth proportional to 768,018.16, 1,059,865.32 and 428,479.12 is: 591,301.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,018.16 : 1,059,865.32 = 428,479.12 : x
  2. Step 2: Convert to fraction form
    768,018.16/1,059,865.32 = 428,479.12/x
  3. Step 3: Cross multiply
    768,018.16x = 1,059,865.32 × 428,479.12
  4. Step 4: Simplify right side
    768,018.16x = 454,130,159,632.12
  5. Step 5: Solve for x
    x = 454,130,159,632.12/768,018.16
  6. Step 6: Final answer
    x = 591,301.33

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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.