Home / 685,503.68-1,028,681.28-330,554.24

Finding the Fourth Proportional to 685,503.68, 1,028,681.28 and 330,554.24

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Solution

The fourth proportional to 685,503.68, 1,028,681.28 and 330,554.24 is: 496,036.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,503.68 : 1,028,681.28 = 330,554.24 : x
  2. Step 2: Convert to fraction form
    685,503.68/1,028,681.28 = 330,554.24/x
  3. Step 3: Cross multiply
    685,503.68x = 1,028,681.28 × 330,554.24
  4. Step 4: Simplify right side
    685,503.68x = 340,034,958,712.63
  5. Step 5: Solve for x
    x = 340,034,958,712.63/685,503.68
  6. Step 6: Final answer
    x = 496,036.66

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Double scale
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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.