Home / 520,129,800.52-780,075,311.96-310,099,915.98

Finding the Fourth Proportional to 520,129,800.52, 780,075,311.96 and 310,099,915.98

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Solution

The fourth proportional to 520,129,800.52, 780,075,311.96 and 310,099,915.98 is: 465,078,694.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,129,800.52 : 780,075,311.96 = 310,099,915.98 : x
  2. Step 2: Convert to fraction form
    520,129,800.52/780,075,311.96 = 310,099,915.98/x
  3. Step 3: Cross multiply
    520,129,800.52x = 780,075,311.96 × 310,099,915.98
  4. Step 4: Simplify right side
    520,129,800.52x = 241,901,288,697,643,552
  5. Step 5: Solve for x
    x = 241,901,288,697,643,552/520,129,800.52
  6. Step 6: Final answer
    x = 465,078,694.70

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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.