Home / 699,276.80-1,048,300.80-418,905.60

Finding the Fourth Proportional to 699,276.80, 1,048,300.80 and 418,905.60

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Solution

The fourth proportional to 699,276.80, 1,048,300.80 and 418,905.60 is: 627,990.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,276.80 : 1,048,300.80 = 418,905.60 : x
  2. Step 2: Convert to fraction form
    699,276.80/1,048,300.80 = 418,905.60/x
  3. Step 3: Cross multiply
    699,276.80x = 1,048,300.80 × 418,905.60
  4. Step 4: Simplify right side
    699,276.80x = 439,139,075,604.48
  5. Step 5: Solve for x
    x = 439,139,075,604.48/699,276.80
  6. Step 6: Final answer
    x = 627,990.34

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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.