Home / 520,406,480.70-779,076,014.40-455,836,399.20

Finding the Fourth Proportional to 520,406,480.70, 779,076,014.40 and 455,836,399.20

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Solution

The fourth proportional to 520,406,480.70, 779,076,014.40 and 455,836,399.20 is: 682,411,188.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,406,480.70 : 779,076,014.40 = 455,836,399.20 : x
  2. Step 2: Convert to fraction form
    520,406,480.70/779,076,014.40 = 455,836,399.20/x
  3. Step 3: Cross multiply
    520,406,480.70x = 779,076,014.40 × 455,836,399.20
  4. Step 4: Simplify right side
    520,406,480.70x = 355,131,205,107,183,360
  5. Step 5: Solve for x
    x = 355,131,205,107,183,360/520,406,480.70
  6. Step 6: Final answer
    x = 682,411,188.71

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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.