Home / 1,318,428.63-1,977,700.35-645,076.85

Finding the Fourth Proportional to 1,318,428.63, 1,977,700.35 and 645,076.85

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Solution

The fourth proportional to 1,318,428.63, 1,977,700.35 and 645,076.85 is: 967,643.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,428.63 : 1,977,700.35 = 645,076.85 : x
  2. Step 2: Convert to fraction form
    1,318,428.63/1,977,700.35 = 645,076.85/x
  3. Step 3: Cross multiply
    1,318,428.63x = 1,977,700.35 × 645,076.85
  4. Step 4: Simplify right side
    1,318,428.63x = 1,275,768,704,552.43
  5. Step 5: Solve for x
    x = 1,275,768,704,552.43/1,318,428.63
  6. Step 6: Final answer
    x = 967,643.36

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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.