Home / 659,490,128.88-989,015,715.52-265,915,300.96

Finding the Fourth Proportional to 659,490,128.88, 989,015,715.52 and 265,915,300.96

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Solution

The fourth proportional to 659,490,128.88, 989,015,715.52 and 265,915,300.96 is: 398,784,455.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,490,128.88 : 989,015,715.52 = 265,915,300.96 : x
  2. Step 2: Convert to fraction form
    659,490,128.88/989,015,715.52 = 265,915,300.96/x
  3. Step 3: Cross multiply
    659,490,128.88x = 989,015,715.52 × 265,915,300.96
  4. Step 4: Simplify right side
    659,490,128.88x = 262,994,411,646,670,560
  5. Step 5: Solve for x
    x = 262,994,411,646,670,560/659,490,128.88
  6. Step 6: Final answer
    x = 398,784,455.04

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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.