Home / 777,534.18-1,072,992.39-438,111.78

Finding the Fourth Proportional to 777,534.18, 1,072,992.39 and 438,111.78

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Solution

The fourth proportional to 777,534.18, 1,072,992.39 and 438,111.78 is: 604,591.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,534.18 : 1,072,992.39 = 438,111.78 : x
  2. Step 2: Convert to fraction form
    777,534.18/1,072,992.39 = 438,111.78/x
  3. Step 3: Cross multiply
    777,534.18x = 1,072,992.39 × 438,111.78
  4. Step 4: Simplify right side
    777,534.18x = 470,090,605,909.35
  5. Step 5: Solve for x
    x = 470,090,605,909.35/777,534.18
  6. Step 6: Final answer
    x = 604,591.56

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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.