Home / 644,667.54-889,646.49-403,090.16

Finding the Fourth Proportional to 644,667.54, 889,646.49 and 403,090.16

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Solution

The fourth proportional to 644,667.54, 889,646.49 and 403,090.16 is: 556,267.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,667.54 : 889,646.49 = 403,090.16 : x
  2. Step 2: Convert to fraction form
    644,667.54/889,646.49 = 403,090.16/x
  3. Step 3: Cross multiply
    644,667.54x = 889,646.49 × 403,090.16
  4. Step 4: Simplify right side
    644,667.54x = 358,607,741,549.31
  5. Step 5: Solve for x
    x = 358,607,741,549.31/644,667.54
  6. Step 6: Final answer
    x = 556,267.72

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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.