Home / 698,117.40-1,047,176.10-665,640.45

Finding the Fourth Proportional to 698,117.40, 1,047,176.10 and 665,640.45

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Solution

The fourth proportional to 698,117.40, 1,047,176.10 and 665,640.45 is: 998,460.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,117.40 : 1,047,176.10 = 665,640.45 : x
  2. Step 2: Convert to fraction form
    698,117.40/1,047,176.10 = 665,640.45/x
  3. Step 3: Cross multiply
    698,117.40x = 1,047,176.10 × 665,640.45
  4. Step 4: Simplify right side
    698,117.40x = 697,042,770,433.25
  5. Step 5: Solve for x
    x = 697,042,770,433.25/698,117.40
  6. Step 6: Final answer
    x = 998,460.68

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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.