Home / 889,621.76-1,227,707.52-487,235.84

Finding the Fourth Proportional to 889,621.76, 1,227,707.52 and 487,235.84

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Solution

The fourth proportional to 889,621.76, 1,227,707.52 and 487,235.84 is: 672,401.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,621.76 : 1,227,707.52 = 487,235.84 : x
  2. Step 2: Convert to fraction form
    889,621.76/1,227,707.52 = 487,235.84/x
  3. Step 3: Cross multiply
    889,621.76x = 1,227,707.52 × 487,235.84
  4. Step 4: Simplify right side
    889,621.76x = 598,183,104,781.52
  5. Step 5: Solve for x
    x = 598,183,104,781.52/889,621.76
  6. Step 6: Final answer
    x = 672,401.61

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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.