Home / 911,905.84-1,258,390.90-503,986.60

Finding the Fourth Proportional to 911,905.84, 1,258,390.90 and 503,986.60

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Solution

The fourth proportional to 911,905.84, 1,258,390.90 and 503,986.60 is: 695,479.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,905.84 : 1,258,390.90 = 503,986.60 : x
  2. Step 2: Convert to fraction form
    911,905.84/1,258,390.90 = 503,986.60/x
  3. Step 3: Cross multiply
    911,905.84x = 1,258,390.90 × 503,986.60
  4. Step 4: Simplify right side
    911,905.84x = 634,212,151,161.94
  5. Step 5: Solve for x
    x = 634,212,151,161.94/911,905.84
  6. Step 6: Final answer
    x = 695,479.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.