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Finding the Fourth Proportional to 519,297,783.52, 716,679,015.60 and 287,510,775.52

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Solution

The fourth proportional to 519,297,783.52, 716,679,015.60 and 287,510,775.52 is: 396,791,486.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,297,783.52 : 716,679,015.60 = 287,510,775.52 : x
  2. Step 2: Convert to fraction form
    519,297,783.52/716,679,015.60 = 287,510,775.52/x
  3. Step 3: Cross multiply
    519,297,783.52x = 716,679,015.60 × 287,510,775.52
  4. Step 4: Simplify right side
    519,297,783.52x = 206,052,939,574,066,176
  5. Step 5: Solve for x
    x = 206,052,939,574,066,176/519,297,783.52
  6. Step 6: Final answer
    x = 396,791,486.72

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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.