Home / 1,318,127.40-1,977,075.90-431,663.40

Finding the Fourth Proportional to 1,318,127.40, 1,977,075.90 and 431,663.40

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Solution

The fourth proportional to 1,318,127.40, 1,977,075.90 and 431,663.40 is: 647,457.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,127.40 : 1,977,075.90 = 431,663.40 : x
  2. Step 2: Convert to fraction form
    1,318,127.40/1,977,075.90 = 431,663.40/x
  3. Step 3: Cross multiply
    1,318,127.40x = 1,977,075.90 × 431,663.40
  4. Step 4: Simplify right side
    1,318,127.40x = 853,431,305,052.06
  5. Step 5: Solve for x
    x = 853,431,305,052.06/1,318,127.40
  6. Step 6: Final answer
    x = 647,457.37

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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.