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Finding the Fourth Proportional to 613,313.10, 919,969.65 and 585,756.90

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Solution

The fourth proportional to 613,313.10, 919,969.65 and 585,756.90 is: 878,635.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,313.10 : 919,969.65 = 585,756.90 : x
  2. Step 2: Convert to fraction form
    613,313.10/919,969.65 = 585,756.90/x
  3. Step 3: Cross multiply
    613,313.10x = 919,969.65 × 585,756.90
  4. Step 4: Simplify right side
    613,313.10x = 538,878,570,278.09
  5. Step 5: Solve for x
    x = 538,878,570,278.09/613,313.10
  6. Step 6: Final answer
    x = 878,635.35

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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.