Home / 285,931,032.12-428,825,689.38-81,460,878.84

Finding the Fourth Proportional to 285,931,032.12, 428,825,689.38 and 81,460,878.84

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Solution

The fourth proportional to 285,931,032.12, 428,825,689.38 and 81,460,878.84 is: 122,171,130.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,931,032.12 : 428,825,689.38 = 81,460,878.84 : x
  2. Step 2: Convert to fraction form
    285,931,032.12/428,825,689.38 = 81,460,878.84/x
  3. Step 3: Cross multiply
    285,931,032.12x = 428,825,689.38 × 81,460,878.84
  4. Step 4: Simplify right side
    285,931,032.12x = 34,932,517,526,063,656
  5. Step 5: Solve for x
    x = 34,932,517,526,063,656/285,931,032.12
  6. Step 6: Final answer
    x = 122,171,130.80

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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.