Home / 1,215,117.80-1,822,328.40-362,153.78

Finding the Fourth Proportional to 1,215,117.80, 1,822,328.40 and 362,153.78

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Solution

The fourth proportional to 1,215,117.80, 1,822,328.40 and 362,153.78 is: 543,126.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,117.80 : 1,822,328.40 = 362,153.78 : x
  2. Step 2: Convert to fraction form
    1,215,117.80/1,822,328.40 = 362,153.78/x
  3. Step 3: Cross multiply
    1,215,117.80x = 1,822,328.40 × 362,153.78
  4. Step 4: Simplify right side
    1,215,117.80x = 659,963,118,461.35
  5. Step 5: Solve for x
    x = 659,963,118,461.35/1,215,117.80
  6. Step 6: Final answer
    x = 543,126.86

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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.