Home / 871,792.40-1,307,688.60-820,182.80

Finding the Fourth Proportional to 871,792.40, 1,307,688.60 and 820,182.80

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Solution

The fourth proportional to 871,792.40, 1,307,688.60 and 820,182.80 is: 1,230,274.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,792.40 : 1,307,688.60 = 820,182.80 : x
  2. Step 2: Convert to fraction form
    871,792.40/1,307,688.60 = 820,182.80/x
  3. Step 3: Cross multiply
    871,792.40x = 1,307,688.60 × 820,182.80
  4. Step 4: Simplify right side
    871,792.40x = 1,072,543,697,476.08
  5. Step 5: Solve for x
    x = 1,072,543,697,476.08/871,792.40
  6. Step 6: Final answer
    x = 1,230,274.20

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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.