Home / 520,518,433.47-780,906,877.55-258,326,037.41

Finding the Fourth Proportional to 520,518,433.47, 780,906,877.55 and 258,326,037.41

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Solution

The fourth proportional to 520,518,433.47, 780,906,877.55 and 258,326,037.41 is: 387,553,189.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,518,433.47 : 780,906,877.55 = 258,326,037.41 : x
  2. Step 2: Convert to fraction form
    520,518,433.47/780,906,877.55 = 258,326,037.41/x
  3. Step 3: Cross multiply
    520,518,433.47x = 780,906,877.55 × 258,326,037.41
  4. Step 4: Simplify right side
    520,518,433.47x = 201,728,579,258,511,424
  5. Step 5: Solve for x
    x = 201,728,579,258,511,424/520,518,433.47
  6. Step 6: Final answer
    x = 387,553,189.84

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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.