Home / 644,669.04-889,648.56-403,091.64

Finding the Fourth Proportional to 644,669.04, 889,648.56 and 403,091.64

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Solution

The fourth proportional to 644,669.04, 889,648.56 and 403,091.64 is: 556,269.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,669.04 : 889,648.56 = 403,091.64 : x
  2. Step 2: Convert to fraction form
    644,669.04/889,648.56 = 403,091.64/x
  3. Step 3: Cross multiply
    644,669.04x = 889,648.56 × 403,091.64
  4. Step 4: Simplify right side
    644,669.04x = 358,609,897,074.04
  5. Step 5: Solve for x
    x = 358,609,897,074.04/644,669.04
  6. Step 6: Final answer
    x = 556,269.77

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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.