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Finding the Fourth Proportional to 710,475.40, 1,065,713.10 and 445,054.60

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Solution

The fourth proportional to 710,475.40, 1,065,713.10 and 445,054.60 is: 667,581.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,475.40 : 1,065,713.10 = 445,054.60 : x
  2. Step 2: Convert to fraction form
    710,475.40/1,065,713.10 = 445,054.60/x
  3. Step 3: Cross multiply
    710,475.40x = 1,065,713.10 × 445,054.60
  4. Step 4: Simplify right side
    710,475.40x = 474,300,517,435.26
  5. Step 5: Solve for x
    x = 474,300,517,435.26/710,475.40
  6. Step 6: Final answer
    x = 667,581.90

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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.