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Finding the Fourth Proportional to 655,111.44, 903,980.52 and 368,730

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Solution

The fourth proportional to 655,111.44, 903,980.52 and 368,730 is: 508,806.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,111.44 : 903,980.52 = 368,730 : x
  2. Step 2: Convert to fraction form
    655,111.44/903,980.52 = 368,730/x
  3. Step 3: Cross multiply
    655,111.44x = 903,980.52 × 368,730
  4. Step 4: Simplify right side
    655,111.44x = 333,324,737,139.60
  5. Step 5: Solve for x
    x = 333,324,737,139.60/655,111.44
  6. Step 6: Final answer
    x = 508,806.16

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1.5x scale

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.