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Finding the Fourth Proportional to 507,938.76, 700,813.62 and 400,174.28

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Solution

The fourth proportional to 507,938.76, 700,813.62 and 400,174.28 is: 552,128.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,938.76 : 700,813.62 = 400,174.28 : x
  2. Step 2: Convert to fraction form
    507,938.76/700,813.62 = 400,174.28/x
  3. Step 3: Cross multiply
    507,938.76x = 700,813.62 × 400,174.28
  4. Step 4: Simplify right side
    507,938.76x = 280,447,585,797.69
  5. Step 5: Solve for x
    x = 280,447,585,797.69/507,938.76
  6. Step 6: Final answer
    x = 552,128.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.