Home / 644,786.16-889,764.06-358,289.16

Finding the Fourth Proportional to 644,786.16, 889,764.06 and 358,289.16

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Solution

The fourth proportional to 644,786.16, 889,764.06 and 358,289.16 is: 494,416.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,786.16 : 889,764.06 = 358,289.16 : x
  2. Step 2: Convert to fraction form
    644,786.16/889,764.06 = 358,289.16/x
  3. Step 3: Cross multiply
    644,786.16x = 889,764.06 × 358,289.16
  4. Step 4: Simplify right side
    644,786.16x = 318,792,817,655.59
  5. Step 5: Solve for x
    x = 318,792,817,655.59/644,786.16
  6. Step 6: Final answer
    x = 494,416.35

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Double scale
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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.