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Finding the Fourth Proportional to 403,433.60, 605,150.40 and 393,065.60

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Solution

The fourth proportional to 403,433.60, 605,150.40 and 393,065.60 is: 589,598.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,433.60 : 605,150.40 = 393,065.60 : x
  2. Step 2: Convert to fraction form
    403,433.60/605,150.40 = 393,065.60/x
  3. Step 3: Cross multiply
    403,433.60x = 605,150.40 × 393,065.60
  4. Step 4: Simplify right side
    403,433.60x = 237,863,805,066.24
  5. Step 5: Solve for x
    x = 237,863,805,066.24/403,433.60
  6. Step 6: Final answer
    x = 589,598.40

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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.