Home / 1,318,350.80-1,977,065.40-687,054.80

Finding the Fourth Proportional to 1,318,350.80, 1,977,065.40 and 687,054.80

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Solution

The fourth proportional to 1,318,350.80, 1,977,065.40 and 687,054.80 is: 1,030,342.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,350.80 : 1,977,065.40 = 687,054.80 : x
  2. Step 2: Convert to fraction form
    1,318,350.80/1,977,065.40 = 687,054.80/x
  3. Step 3: Cross multiply
    1,318,350.80x = 1,977,065.40 × 687,054.80
  4. Step 4: Simplify right side
    1,318,350.80x = 1,358,352,272,983.92
  5. Step 5: Solve for x
    x = 1,358,352,272,983.92/1,318,350.80
  6. Step 6: Final answer
    x = 1,030,342.06

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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.