Home / 692,420.64-955,584.72-390,504.48

Finding the Fourth Proportional to 692,420.64, 955,584.72 and 390,504.48

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Solution

The fourth proportional to 692,420.64, 955,584.72 and 390,504.48 is: 538,921.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,420.64 : 955,584.72 = 390,504.48 : x
  2. Step 2: Convert to fraction form
    692,420.64/955,584.72 = 390,504.48/x
  3. Step 3: Cross multiply
    692,420.64x = 955,584.72 × 390,504.48
  4. Step 4: Simplify right side
    692,420.64x = 373,160,114,179.55
  5. Step 5: Solve for x
    x = 373,160,114,179.55/692,420.64
  6. Step 6: Final answer
    x = 538,921.13

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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.