Home / 1,620,237.60-2,425,690.80-990,381.60

Finding the Fourth Proportional to 1,620,237.60, 2,425,690.80 and 990,381.60

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Solution

The fourth proportional to 1,620,237.60, 2,425,690.80 and 990,381.60 is: 1,482,720.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620,237.60 : 2,425,690.80 = 990,381.60 : x
  2. Step 2: Convert to fraction form
    1,620,237.60/2,425,690.80 = 990,381.60/x
  3. Step 3: Cross multiply
    1,620,237.60x = 2,425,690.80 × 990,381.60
  4. Step 4: Simplify right side
    1,620,237.60x = 2,402,359,535,609.28
  5. Step 5: Solve for x
    x = 2,402,359,535,609.28/1,620,237.60
  6. Step 6: Final answer
    x = 1,482,720.52

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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.