Home / 644,758.34-889,848.33-390,111.62

Finding the Fourth Proportional to 644,758.34, 889,848.33 and 390,111.62

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Solution

The fourth proportional to 644,758.34, 889,848.33 and 390,111.62 is: 538,403.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,758.34 : 889,848.33 = 390,111.62 : x
  2. Step 2: Convert to fraction form
    644,758.34/889,848.33 = 390,111.62/x
  3. Step 3: Cross multiply
    644,758.34x = 889,848.33 × 390,111.62
  4. Step 4: Simplify right side
    644,758.34x = 347,140,173,570.60
  5. Step 5: Solve for x
    x = 347,140,173,570.60/644,758.34
  6. Step 6: Final answer
    x = 538,403.54

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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.