Home / 692,137.80-1,038,206.70-407,536.20

Finding the Fourth Proportional to 692,137.80, 1,038,206.70 and 407,536.20

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Solution

The fourth proportional to 692,137.80, 1,038,206.70 and 407,536.20 is: 611,304.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,137.80 : 1,038,206.70 = 407,536.20 : x
  2. Step 2: Convert to fraction form
    692,137.80/1,038,206.70 = 407,536.20/x
  3. Step 3: Cross multiply
    692,137.80x = 1,038,206.70 × 407,536.20
  4. Step 4: Simplify right side
    692,137.80x = 423,106,813,332.54
  5. Step 5: Solve for x
    x = 423,106,813,332.54/692,137.80
  6. Step 6: Final answer
    x = 611,304.30

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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.