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Finding the Fourth Proportional to 7,431,069.80, 10,390,900.60 and 7,431,069.80

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Solution

The fourth proportional to 7,431,069.80, 10,390,900.60 and 7,431,069.80 is: 10,390,900.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,431,069.80 : 10,390,900.60 = 7,431,069.80 : x
  2. Step 2: Convert to fraction form
    7,431,069.80/10,390,900.60 = 7,431,069.80/x
  3. Step 3: Cross multiply
    7,431,069.80x = 10,390,900.60 × 7,431,069.80
  4. Step 4: Simplify right side
    7,431,069.80x = 77,215,507,643,461.88
  5. Step 5: Solve for x
    x = 77,215,507,643,461.88/7,431,069.80
  6. Step 6: Final answer
    x = 10,390,900.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.