Home / 849,416.96-1,274,913.12-428,987.84

Finding the Fourth Proportional to 849,416.96, 1,274,913.12 and 428,987.84

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Solution

The fourth proportional to 849,416.96, 1,274,913.12 and 428,987.84 is: 643,879.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    849,416.96 : 1,274,913.12 = 428,987.84 : x
  2. Step 2: Convert to fraction form
    849,416.96/1,274,913.12 = 428,987.84/x
  3. Step 3: Cross multiply
    849,416.96x = 1,274,913.12 × 428,987.84
  4. Step 4: Simplify right side
    849,416.96x = 546,922,225,536.46
  5. Step 5: Solve for x
    x = 546,922,225,536.46/849,416.96
  6. Step 6: Final answer
    x = 643,879.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.