Home / 7,128,020.20-10,692,030.30-2,871,243.40

Finding the Fourth Proportional to 7,128,020.20, 10,692,030.30 and 2,871,243.40

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Solution

The fourth proportional to 7,128,020.20, 10,692,030.30 and 2,871,243.40 is: 4,306,865.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128,020.20 : 10,692,030.30 = 2,871,243.40 : x
  2. Step 2: Convert to fraction form
    7,128,020.20/10,692,030.30 = 2,871,243.40/x
  3. Step 3: Cross multiply
    7,128,020.20x = 10,692,030.30 × 2,871,243.40
  4. Step 4: Simplify right side
    7,128,020.20x = 30,699,421,431,475.02
  5. Step 5: Solve for x
    x = 30,699,421,431,475.02/7,128,020.20
  6. Step 6: Final answer
    x = 4,306,865.10

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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.