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Finding the Fourth Proportional to 1,075,869.80, 1,613,804.70 and 739,946.60

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Solution

The fourth proportional to 1,075,869.80, 1,613,804.70 and 739,946.60 is: 1,109,919.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,075,869.80 : 1,613,804.70 = 739,946.60 : x
  2. Step 2: Convert to fraction form
    1,075,869.80/1,613,804.70 = 739,946.60/x
  3. Step 3: Cross multiply
    1,075,869.80x = 1,613,804.70 × 739,946.60
  4. Step 4: Simplify right side
    1,075,869.80x = 1,194,129,300,829.02
  5. Step 5: Solve for x
    x = 1,194,129,300,829.02/1,075,869.80
  6. Step 6: Final answer
    x = 1,109,919.90

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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.