Home / 1,212,007.80-1,818,011.70-538,087.80

Finding the Fourth Proportional to 1,212,007.80, 1,818,011.70 and 538,087.80

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Solution

The fourth proportional to 1,212,007.80, 1,818,011.70 and 538,087.80 is: 807,131.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,007.80 : 1,818,011.70 = 538,087.80 : x
  2. Step 2: Convert to fraction form
    1,212,007.80/1,818,011.70 = 538,087.80/x
  3. Step 3: Cross multiply
    1,212,007.80x = 1,818,011.70 × 538,087.80
  4. Step 4: Simplify right side
    1,212,007.80x = 978,249,916,027.26
  5. Step 5: Solve for x
    x = 978,249,916,027.26/1,212,007.80
  6. Step 6: Final answer
    x = 807,131.70

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1.5x scale

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.