Home / 522,030,900.64-720,421,129.74-287,099,744.80

Finding the Fourth Proportional to 522,030,900.64, 720,421,129.74 and 287,099,744.80

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Solution

The fourth proportional to 522,030,900.64, 720,421,129.74 and 287,099,744.80 is: 396,207,814.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,030,900.64 : 720,421,129.74 = 287,099,744.80 : x
  2. Step 2: Convert to fraction form
    522,030,900.64/720,421,129.74 = 287,099,744.80/x
  3. Step 3: Cross multiply
    522,030,900.64x = 720,421,129.74 × 287,099,744.80
  4. Step 4: Simplify right side
    522,030,900.64x = 206,832,722,496,881,696
  5. Step 5: Solve for x
    x = 206,832,722,496,881,696/522,030,900.64
  6. Step 6: Final answer
    x = 396,207,814.98

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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.