Home / 1,288,590,042.96-1,932,532,299.72-355,689,875.64

Finding the Fourth Proportional to 1,288,590,042.96, 1,932,532,299.72 and 355,689,875.64

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Solution

The fourth proportional to 1,288,590,042.96, 1,932,532,299.72 and 355,689,875.64 is: 533,437,439.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,590,042.96 : 1,932,532,299.72 = 355,689,875.64 : x
  2. Step 2: Convert to fraction form
    1,288,590,042.96/1,932,532,299.72 = 355,689,875.64/x
  3. Step 3: Cross multiply
    1,288,590,042.96x = 1,932,532,299.72 × 355,689,875.64
  4. Step 4: Simplify right side
    1,288,590,042.96x = 687,382,173,357,689,984
  5. Step 5: Solve for x
    x = 687,382,173,357,689,984/1,288,590,042.96
  6. Step 6: Final answer
    x = 533,437,439.71

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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.