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Finding the Fourth Proportional to 869,070.70, 1,303,606.05 and 764,008.30

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Solution

The fourth proportional to 869,070.70, 1,303,606.05 and 764,008.30 is: 1,146,012.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,070.70 : 1,303,606.05 = 764,008.30 : x
  2. Step 2: Convert to fraction form
    869,070.70/1,303,606.05 = 764,008.30/x
  3. Step 3: Cross multiply
    869,070.70x = 1,303,606.05 × 764,008.30
  4. Step 4: Simplify right side
    869,070.70x = 995,965,842,130.22
  5. Step 5: Solve for x
    x = 995,965,842,130.22/869,070.70
  6. Step 6: Final answer
    x = 1,146,012.45

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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.