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Finding the Fourth Proportional to 637,812.80, 956,719.20 and 401,422.40

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Solution

The fourth proportional to 637,812.80, 956,719.20 and 401,422.40 is: 602,133.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,812.80 : 956,719.20 = 401,422.40 : x
  2. Step 2: Convert to fraction form
    637,812.80/956,719.20 = 401,422.40/x
  3. Step 3: Cross multiply
    637,812.80x = 956,719.20 × 401,422.40
  4. Step 4: Simplify right side
    637,812.80x = 384,048,517,390.08
  5. Step 5: Solve for x
    x = 384,048,517,390.08/637,812.80
  6. Step 6: Final answer
    x = 602,133.60

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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.