Home / 579,420,007.20-869,130,010.80-515,930,522.40

Finding the Fourth Proportional to 579,420,007.20, 869,130,010.80 and 515,930,522.40

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Solution

The fourth proportional to 579,420,007.20, 869,130,010.80 and 515,930,522.40 is: 773,895,783.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,420,007.20 : 869,130,010.80 = 515,930,522.40 : x
  2. Step 2: Convert to fraction form
    579,420,007.20/869,130,010.80 = 515,930,522.40/x
  3. Step 3: Cross multiply
    579,420,007.20x = 869,130,010.80 × 515,930,522.40
  4. Step 4: Simplify right side
    579,420,007.20x = 448,410,700,505,561,600
  5. Step 5: Solve for x
    x = 448,410,700,505,561,600/579,420,007.20
  6. Step 6: Final answer
    x = 773,895,783.60

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1.5x scale

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.