Home / 1,209,855.40-1,816,095.30-678,414.40

Finding the Fourth Proportional to 1,209,855.40, 1,816,095.30 and 678,414.40

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Solution

The fourth proportional to 1,209,855.40, 1,816,095.30 and 678,414.40 is: 1,018,357.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,855.40 : 1,816,095.30 = 678,414.40 : x
  2. Step 2: Convert to fraction form
    1,209,855.40/1,816,095.30 = 678,414.40/x
  3. Step 3: Cross multiply
    1,209,855.40x = 1,816,095.30 × 678,414.40
  4. Step 4: Simplify right side
    1,209,855.40x = 1,232,065,203,292.32
  5. Step 5: Solve for x
    x = 1,232,065,203,292.32/1,209,855.40
  6. Step 6: Final answer
    x = 1,018,357.40

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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.