Home / 678,557.40-1,017,836.10-620,496.60

Finding the Fourth Proportional to 678,557.40, 1,017,836.10 and 620,496.60

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Solution

The fourth proportional to 678,557.40, 1,017,836.10 and 620,496.60 is: 930,744.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,557.40 : 1,017,836.10 = 620,496.60 : x
  2. Step 2: Convert to fraction form
    678,557.40/1,017,836.10 = 620,496.60/x
  3. Step 3: Cross multiply
    678,557.40x = 1,017,836.10 × 620,496.60
  4. Step 4: Simplify right side
    678,557.40x = 631,563,839,407.26
  5. Step 5: Solve for x
    x = 631,563,839,407.26/678,557.40
  6. Step 6: Final answer
    x = 930,744.90

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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.