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Finding the Fourth Proportional to 1,429,052.74, 1,972,041.75 and 808,844.60

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Solution

The fourth proportional to 1,429,052.74, 1,972,041.75 and 808,844.60 is: 1,116,176.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429,052.74 : 1,972,041.75 = 808,844.60 : x
  2. Step 2: Convert to fraction form
    1,429,052.74/1,972,041.75 = 808,844.60/x
  3. Step 3: Cross multiply
    1,429,052.74x = 1,972,041.75 × 808,844.60
  4. Step 4: Simplify right side
    1,429,052.74x = 1,595,075,320,462.05
  5. Step 5: Solve for x
    x = 1,595,075,320,462.05/1,429,052.74
  6. Step 6: Final answer
    x = 1,116,176.66

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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.