Home / 690,038.50-1,035,057.75-191,402.50

Finding the Fourth Proportional to 690,038.50, 1,035,057.75 and 191,402.50

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Solution

The fourth proportional to 690,038.50, 1,035,057.75 and 191,402.50 is: 287,103.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,038.50 : 1,035,057.75 = 191,402.50 : x
  2. Step 2: Convert to fraction form
    690,038.50/1,035,057.75 = 191,402.50/x
  3. Step 3: Cross multiply
    690,038.50x = 1,035,057.75 × 191,402.50
  4. Step 4: Simplify right side
    690,038.50x = 198,112,640,994.38
  5. Step 5: Solve for x
    x = 198,112,640,994.38/690,038.50
  6. Step 6: Final answer
    x = 287,103.75

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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.