Home / 522,030,899.64-720,421,128.36-287,099,743.80

Finding the Fourth Proportional to 522,030,899.64, 720,421,128.36 and 287,099,743.80

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Solution

The fourth proportional to 522,030,899.64, 720,421,128.36 and 287,099,743.80 is: 396,207,813.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,030,899.64 : 720,421,128.36 = 287,099,743.80 : x
  2. Step 2: Convert to fraction form
    522,030,899.64/720,421,128.36 = 287,099,743.80/x
  3. Step 3: Cross multiply
    522,030,899.64x = 720,421,128.36 × 287,099,743.80
  4. Step 4: Simplify right side
    522,030,899.64x = 206,832,721,380,262,912
  5. Step 5: Solve for x
    x = 206,832,721,380,262,912/522,030,899.64
  6. Step 6: Final answer
    x = 396,207,813.60

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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.