Home / 644,623.87-889,608.63-358,143.96

Finding the Fourth Proportional to 644,623.87, 889,608.63 and 358,143.96

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Solution

The fourth proportional to 644,623.87, 889,608.63 and 358,143.96 is: 494,254.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,623.87 : 889,608.63 = 358,143.96 : x
  2. Step 2: Convert to fraction form
    644,623.87/889,608.63 = 358,143.96/x
  3. Step 3: Cross multiply
    644,623.87x = 889,608.63 × 358,143.96
  4. Step 4: Simplify right side
    644,623.87x = 318,607,957,598.38
  5. Step 5: Solve for x
    x = 318,607,957,598.38/644,623.87
  6. Step 6: Final answer
    x = 494,254.05

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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.