Home / 771,630.04-1,065,128.70-628,140.97

Finding the Fourth Proportional to 771,630.04, 1,065,128.70 and 628,140.97

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Solution

The fourth proportional to 771,630.04, 1,065,128.70 and 628,140.97 is: 867,061.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,630.04 : 1,065,128.70 = 628,140.97 : x
  2. Step 2: Convert to fraction form
    771,630.04/1,065,128.70 = 628,140.97/x
  3. Step 3: Cross multiply
    771,630.04x = 1,065,128.70 × 628,140.97
  4. Step 4: Simplify right side
    771,630.04x = 669,050,974,792.84
  5. Step 5: Solve for x
    x = 669,050,974,792.84/771,630.04
  6. Step 6: Final answer
    x = 867,061.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.