Home / 2,130,478.60-3,191,570.70-1,286,523.40

Finding the Fourth Proportional to 2,130,478.60, 3,191,570.70 and 1,286,523.40

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Solution

The fourth proportional to 2,130,478.60, 3,191,570.70 and 1,286,523.40 is: 1,927,280.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130,478.60 : 3,191,570.70 = 1,286,523.40 : x
  2. Step 2: Convert to fraction form
    2,130,478.60/3,191,570.70 = 1,286,523.40/x
  3. Step 3: Cross multiply
    2,130,478.60x = 3,191,570.70 × 1,286,523.40
  4. Step 4: Simplify right side
    2,130,478.60x = 4,106,030,388,304.38
  5. Step 5: Solve for x
    x = 4,106,030,388,304.38/2,130,478.60
  6. Step 6: Final answer
    x = 1,927,280.75

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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.