Home / 1,390,357.80-2,082,912.30-714,137.40

Finding the Fourth Proportional to 1,390,357.80, 2,082,912.30 and 714,137.40

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Solution

The fourth proportional to 1,390,357.80, 2,082,912.30 and 714,137.40 is: 1,069,858.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,357.80 : 2,082,912.30 = 714,137.40 : x
  2. Step 2: Convert to fraction form
    1,390,357.80/2,082,912.30 = 714,137.40/x
  3. Step 3: Cross multiply
    1,390,357.80x = 2,082,912.30 × 714,137.40
  4. Step 4: Simplify right side
    1,390,357.80x = 1,487,485,574,350.02
  5. Step 5: Solve for x
    x = 1,487,485,574,350.02/1,390,357.80
  6. Step 6: Final answer
    x = 1,069,858.11

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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.