Home / 386,540.94-579,829.62-318,947.58

Finding the Fourth Proportional to 386,540.94, 579,829.62 and 318,947.58

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Solution

The fourth proportional to 386,540.94, 579,829.62 and 318,947.58 is: 478,436.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,540.94 : 579,829.62 = 318,947.58 : x
  2. Step 2: Convert to fraction form
    386,540.94/579,829.62 = 318,947.58/x
  3. Step 3: Cross multiply
    386,540.94x = 579,829.62 × 318,947.58
  4. Step 4: Simplify right side
    386,540.94x = 184,935,254,111.32
  5. Step 5: Solve for x
    x = 184,935,254,111.32/386,540.94
  6. Step 6: Final answer
    x = 478,436.40

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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.