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Finding the Fourth Proportional to 486,871.85, 671,768 and 282,801.51

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Solution

The fourth proportional to 486,871.85, 671,768 and 282,801.51 is: 390,199.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,871.85 : 671,768 = 282,801.51 : x
  2. Step 2: Convert to fraction form
    486,871.85/671,768 = 282,801.51/x
  3. Step 3: Cross multiply
    486,871.85x = 671,768 × 282,801.51
  4. Step 4: Simplify right side
    486,871.85x = 189,977,004,769.68
  5. Step 5: Solve for x
    x = 189,977,004,769.68/486,871.85
  6. Step 6: Final answer
    x = 390,199.20

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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.