Home / 686,912.40-1,030,368.60-447,763.95

Finding the Fourth Proportional to 686,912.40, 1,030,368.60 and 447,763.95

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Solution

The fourth proportional to 686,912.40, 1,030,368.60 and 447,763.95 is: 671,645.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,912.40 : 1,030,368.60 = 447,763.95 : x
  2. Step 2: Convert to fraction form
    686,912.40/1,030,368.60 = 447,763.95/x
  3. Step 3: Cross multiply
    686,912.40x = 1,030,368.60 × 447,763.95
  4. Step 4: Simplify right side
    686,912.40x = 461,361,914,291.97
  5. Step 5: Solve for x
    x = 461,361,914,291.97/686,912.40
  6. Step 6: Final answer
    x = 671,645.93

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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.