Home / 811,420.40-1,217,130.60-622,463.60

Finding the Fourth Proportional to 811,420.40, 1,217,130.60 and 622,463.60

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Solution

The fourth proportional to 811,420.40, 1,217,130.60 and 622,463.60 is: 933,695.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,420.40 : 1,217,130.60 = 622,463.60 : x
  2. Step 2: Convert to fraction form
    811,420.40/1,217,130.60 = 622,463.60/x
  3. Step 3: Cross multiply
    811,420.40x = 1,217,130.60 × 622,463.60
  4. Step 4: Simplify right side
    811,420.40x = 757,619,494,946.16
  5. Step 5: Solve for x
    x = 757,619,494,946.16/811,420.40
  6. Step 6: Final answer
    x = 933,695.40

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1.5x scale

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.