Home / 1,318,897.55-1,977,312.82-520,776.50

Finding the Fourth Proportional to 1,318,897.55, 1,977,312.82 and 520,776.50

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Solution

The fourth proportional to 1,318,897.55, 1,977,312.82 and 520,776.50 is: 780,756.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,897.55 : 1,977,312.82 = 520,776.50 : x
  2. Step 2: Convert to fraction form
    1,318,897.55/1,977,312.82 = 520,776.50/x
  3. Step 3: Cross multiply
    1,318,897.55x = 1,977,312.82 × 520,776.50
  4. Step 4: Simplify right side
    1,318,897.55x = 1,029,738,053,446.07
  5. Step 5: Solve for x
    x = 1,029,738,053,446.07/1,318,897.55
  6. Step 6: Final answer
    x = 780,756.67

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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.