Home / 1,087,241.40-1,631,639.70-456,607.80

Finding the Fourth Proportional to 1,087,241.40, 1,631,639.70 and 456,607.80

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Solution

The fourth proportional to 1,087,241.40, 1,631,639.70 and 456,607.80 is: 685,238.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087,241.40 : 1,631,639.70 = 456,607.80 : x
  2. Step 2: Convert to fraction form
    1,087,241.40/1,631,639.70 = 456,607.80/x
  3. Step 3: Cross multiply
    1,087,241.40x = 1,631,639.70 × 456,607.80
  4. Step 4: Simplify right side
    1,087,241.40x = 745,019,413,809.66
  5. Step 5: Solve for x
    x = 745,019,413,809.66/1,087,241.40
  6. Step 6: Final answer
    x = 685,238.27

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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.