Home / 1,123,604.20-1,681,907.10-648,879.40

Finding the Fourth Proportional to 1,123,604.20, 1,681,907.10 and 648,879.40

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Solution

The fourth proportional to 1,123,604.20, 1,681,907.10 and 648,879.40 is: 971,298.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,604.20 : 1,681,907.10 = 648,879.40 : x
  2. Step 2: Convert to fraction form
    1,123,604.20/1,681,907.10 = 648,879.40/x
  3. Step 3: Cross multiply
    1,123,604.20x = 1,681,907.10 × 648,879.40
  4. Step 4: Simplify right side
    1,123,604.20x = 1,091,354,869,903.74
  5. Step 5: Solve for x
    x = 1,091,354,869,903.74/1,123,604.20
  6. Step 6: Final answer
    x = 971,298.32

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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.