Home / 428,017,028.16-640,935,637.74-282,007,930.92

Finding the Fourth Proportional to 428,017,028.16, 640,935,637.74 and 282,007,930.92

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Solution

The fourth proportional to 428,017,028.16, 640,935,637.74 and 282,007,930.92 is: 422,293,790.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,017,028.16 : 640,935,637.74 = 282,007,930.92 : x
  2. Step 2: Convert to fraction form
    428,017,028.16/640,935,637.74 = 282,007,930.92/x
  3. Step 3: Cross multiply
    428,017,028.16x = 640,935,637.74 × 282,007,930.92
  4. Step 4: Simplify right side
    428,017,028.16x = 180,748,933,051,948,064
  5. Step 5: Solve for x
    x = 180,748,933,051,948,064/428,017,028.16
  6. Step 6: Final answer
    x = 422,293,790.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.