Home / 685,870.56-1,029,099.76-353,679.84

Finding the Fourth Proportional to 685,870.56, 1,029,099.76 and 353,679.84

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Solution

The fourth proportional to 685,870.56, 1,029,099.76 and 353,679.84 is: 530,671.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,870.56 : 1,029,099.76 = 353,679.84 : x
  2. Step 2: Convert to fraction form
    685,870.56/1,029,099.76 = 353,679.84/x
  3. Step 3: Cross multiply
    685,870.56x = 1,029,099.76 × 353,679.84
  4. Step 4: Simplify right side
    685,870.56x = 363,971,838,460.84
  5. Step 5: Solve for x
    x = 363,971,838,460.84/685,870.56
  6. Step 6: Final answer
    x = 530,671.32

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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.