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Finding the Fourth Proportional to 1,090,059.73, 1,502,723.47 and 766,766.45

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Solution

The fourth proportional to 1,090,059.73, 1,502,723.47 and 766,766.45 is: 1,057,041.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090,059.73 : 1,502,723.47 = 766,766.45 : x
  2. Step 2: Convert to fraction form
    1,090,059.73/1,502,723.47 = 766,766.45/x
  3. Step 3: Cross multiply
    1,090,059.73x = 1,502,723.47 × 766,766.45
  4. Step 4: Simplify right side
    1,090,059.73x = 1,152,237,941,544.63
  5. Step 5: Solve for x
    x = 1,152,237,941,544.63/1,090,059.73
  6. Step 6: Final answer
    x = 1,057,041.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.