Home / 1,276,576.80-1,914,404.40-645,280.80

Finding the Fourth Proportional to 1,276,576.80, 1,914,404.40 and 645,280.80

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Solution

The fourth proportional to 1,276,576.80, 1,914,404.40 and 645,280.80 is: 967,688.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,576.80 : 1,914,404.40 = 645,280.80 : x
  2. Step 2: Convert to fraction form
    1,276,576.80/1,914,404.40 = 645,280.80/x
  3. Step 3: Cross multiply
    1,276,576.80x = 1,914,404.40 × 645,280.80
  4. Step 4: Simplify right side
    1,276,576.80x = 1,235,328,402,755.52
  5. Step 5: Solve for x
    x = 1,235,328,402,755.52/1,276,576.80
  6. Step 6: Final answer
    x = 967,688.28

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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.