Home / 1,216,753.20-1,679,075.40-665,450.07

Finding the Fourth Proportional to 1,216,753.20, 1,679,075.40 and 665,450.07

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Solution

The fourth proportional to 1,216,753.20, 1,679,075.40 and 665,450.07 is: 918,297.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,753.20 : 1,679,075.40 = 665,450.07 : x
  2. Step 2: Convert to fraction form
    1,216,753.20/1,679,075.40 = 665,450.07/x
  3. Step 3: Cross multiply
    1,216,753.20x = 1,679,075.40 × 665,450.07
  4. Step 4: Simplify right side
    1,216,753.20x = 1,117,340,842,465.28
  5. Step 5: Solve for x
    x = 1,117,340,842,465.28/1,216,753.20
  6. Step 6: Final answer
    x = 918,297.02

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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.