Home / 670,215.40-1,005,323.10-403,838.80

Finding the Fourth Proportional to 670,215.40, 1,005,323.10 and 403,838.80

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Solution

The fourth proportional to 670,215.40, 1,005,323.10 and 403,838.80 is: 605,758.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,215.40 : 1,005,323.10 = 403,838.80 : x
  2. Step 2: Convert to fraction form
    670,215.40/1,005,323.10 = 403,838.80/x
  3. Step 3: Cross multiply
    670,215.40x = 1,005,323.10 × 403,838.80
  4. Step 4: Simplify right side
    670,215.40x = 405,988,474,316.28
  5. Step 5: Solve for x
    x = 405,988,474,316.28/670,215.40
  6. Step 6: Final answer
    x = 605,758.20

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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.