Home / 690,345.80-1,035,518.70-191,709.80

Finding the Fourth Proportional to 690,345.80, 1,035,518.70 and 191,709.80

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Solution

The fourth proportional to 690,345.80, 1,035,518.70 and 191,709.80 is: 287,564.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,345.80 : 1,035,518.70 = 191,709.80 : x
  2. Step 2: Convert to fraction form
    690,345.80/1,035,518.70 = 191,709.80/x
  3. Step 3: Cross multiply
    690,345.80x = 1,035,518.70 × 191,709.80
  4. Step 4: Simplify right side
    690,345.80x = 198,519,082,873.26
  5. Step 5: Solve for x
    x = 198,519,082,873.26/690,345.80
  6. Step 6: Final answer
    x = 287,564.70

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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.