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Finding the Fourth Proportional to 622,500.21, 859,038.63 and 380,765.01

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Solution

The fourth proportional to 622,500.21, 859,038.63 and 380,765.01 is: 525,448.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,500.21 : 859,038.63 = 380,765.01 : x
  2. Step 2: Convert to fraction form
    622,500.21/859,038.63 = 380,765.01/x
  3. Step 3: Cross multiply
    622,500.21x = 859,038.63 × 380,765.01
  4. Step 4: Simplify right side
    622,500.21x = 327,091,852,542.34
  5. Step 5: Solve for x
    x = 327,091,852,542.34/622,500.21
  6. Step 6: Final answer
    x = 525,448.58

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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.